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Science Lab: Joey Porter Jr. trade to Cowboys — the Great, the Good, the Hmm...
Welcome to "The Science Lab", a place where football facts and in-depth analysis always triumph over feelings.
Measure B: San Diego County Health & Safety Act
In this 2026 General Election guide, explore an in-depth explanation of San Diego County's Measure B, including pros and cons, endorsements and key arguments to help voters make informed decisions.
Bills Have a Major Problem Emerging in Their Secondary
Rising sack totals mask a vulnerable unit struggling with Christian Benford’s regression and mounting injuries. Now, Buffalo’s depth faces a brutal litmus test against the league’s elite quarterbacks.
In Hindsight, the Packers Should Have Never Traded Dontayvion Wicks
Jayden Reed’s devastating season-ending injury exposes a critical depth chart void, leaving the Green Bay Packers to rue an offseason trade that sent a potential rising star to Philadelphia.
Business and Industry Association Ranks Lawmakers for the 2026 Session; Political Winds Shifting
The Business and Industry Association's annual legislative report and legislative rankings is an indication of how much the political landscape has changed in Concord.
Business and Industry Association Ranks Lawmakers for the 2026 Session; Political Winds Shifting
The Business and Industry Association's annual legislative report and legislative rankings is an indication of how much the political landscape has changed in Concord.
Lakers' early defensive prowess impresses Austin Reaves, JJ Redick
The veteran guard was quick to mention new wings Matisse Thybulle and Ziaire Williams along with second-year forward Adou Thiero. The coach points to team's depth.
Blazers Shake Up Roster During Camp
The Blazers added depth by signing high-energy wing Jaylen Martin to an Exhibit 10 deal, eyeing a potential G League spark as they refine their preseason rotation.
New study warns about health dangers of plastics
IN-DEPTH WITH SARAH WALL: A new study is out warning about the potential dangers of plastic. The study finds more than 90% of plastic chemicals could pose health risks. We’re taking a look at the study, what it includes and what experts say consumers need to know.
The Family Business Advantage: Third Quarterly Power Breakfast of 2026 explores how family businesses balance legacy and innovation
Photo by GFBJAnother successful Power Breakfast is in the books. The Greater Fayetteville Business Journal hosted its third quarterly Power Breakfast of 2026 on Tuesday, Sept. 29. Local leaders and decision-makers gathered to network and learn from the panel about how established principles drive long-term stability while allowing for operational evolution. The panel featured Managing Partner of Luigi’s Italian Chophouse & Bar, Nate Ernst; Inside Sales at Hubbard Supplyhouse, Mary Grace Hurley; Chief Operations Officer for Copiers Plus, Drew Smith; and CEO of Holmes Security Systems, Stephen Wheeler. The panel was moderated by Lauren Willets, director of the Family Enterprise Center at UNC’s Kenan-Flagler Business School. Throughout the discussion, the panelists returned to a common idea: family businesses thrive when they preserve the relationships and values at their core while remaining open to change.Each panelist shared personal stories that carried practical lessons. Stephen Wheeler emphasized the role of relationships with customers and employees, saying, “What makes a family business successful today is relationships.” Mary Grace Hurley echoed Wheeler’s sentiment, describing relationships as a lasting inheritance, including a customer connection that began when she was young and continued into her working life. “If something’s given to you, that’s going to cost you too,” added Nate Ernst. He explained this philosophy by sharing that, in his view, earning responsibility builds credibility and confidence.Another hot topic was the idea of tradition versus change. For these businesses that have been around for a century or even more, it can be difficult to escape the “we’ve always done it this way” caveat, but these speakers emphasized how change has been an integral part of their growth and longevity. A family business can honor its history without being bound by it.“Innovation and tradition–they don’t have to be competing with one another,” shared Hurley. She pointed to changes in how businesses operate, including the adoption of computers and new management practices. Ernst stressed that adaptation is essential, while Wheeler described how his family’s electrical contracting business had evolved into a security-focused company. The details of the work may change, but identifying and upholding core values is key to embracing change while maintaining the character of a business. “I think it’s just important to remember why you started in the first place. What was your mission? What are your core values? And to reevaluate those,” shared Drew Smith.In addition to the first-hand accounts and wisdom shared by panelists, Moderator Lauren Willets recommended two novels during the panel for those seeking additional educational resources. Those two novels are “Hug of War: How to Lead a Family Business with both Love and Logic”by Cathy Carroll and “In the Company of Family: How to Thrive When Business Is Personal” by Melissa Mitchell-Blitch. Preparing the next generation requires more than handing over a title or company. Wheeler argued that future leaders need genuine passion and a vested interest in the business. The panelists were in agreement that succession is a process, and there is not one clear answer for how to perfectly prepare for it. Leaders must cultivate readiness, keep communication open and make room for the next generation to earn responsibility while being sure not to neglect the business in the here and now. “Today’s Power Breakfast was one of our best events yet! Between the passion and in-depth knowledge of the panelists, the great audience questions and the guidance and expertise of Mrs. Willets, the conversation was both engaging and informative,” shared GFBJ Publisher Faith Hatton. “A lot of small businesses in Fayetteville are family-owned and grown, and it’s great to be able to spotlight some of the businesses that have stood the test of time by strengthening the next generation of leadership and preparing them for ownership. I hope everyone received some inspiration and ideas that they can bring back to their own businesses and organizations!”We thank everyone who attended this Power Breakfast and hope you’ll all join us for the next Power Breakfast on Dec. 8. Details about the event will be shared on our social media and in future email updates. To learn about becoming a Power Breakfast sponsor, contact the Greater Fayetteville Business Journal at 910.240.9697 or marketing@bizfayetteville.com.
Satisfactory DLC Core Values will introduce cavernous constraints through new underground biomes
Core Values is Satisfactory's first "major expansion" and will sport a wealth of new factory buildings, tools, and creatures from the depths.
Scientists Unveil Underwater Solar Panels
Researchers working off China's southwestern coast successfully generated solar energy from a depth of nearly 33 feet.
Lesbian Bar Project Co-Founder: Purity Politics Could Destroy Our Remaining Spaces
Subscribe As a professional lesbian and Massachusetts native, I’ve recently been asked by a lot of folks what I think about the saga unfolding at Last Ditch. The now-viral story, first reported by The Boston Globe, centers on a Western Massachusetts lesbian bar that lifted its mask requirement for one night a week to help drum up business. The decision ignited an intra-queer controversy that has been feasted on by media outlets across the political spectrum—from the New York Post to LGBTQ Nation—and is even reportedly being eyed for a Hollywood adaptation. Apparently nothing is more entertaining than a bunch of lesbians and queers fighting with each other over KN-95s. What has been lost in all of the chatter and media coverage is the very real possibility that Last Ditch, which just opened in April 2025, will have to close its doors. The venue’s one remaining founder, Jackie Matellian, revealed in a community Zoom meeting that she’s working four jobs, is now solely responsible for the bar’s $50,000 business loan and is struggling to keep up with the bills. So as we laugh about the controversy’s similarity to a “Portlandia” skit and how one of the bar’s founders left to enroll in clown school, we forget that yet another lesbian bar is facing an existential crisis—and this time the call is coming from inside the house. In 2020, my friend Elina Street and I created The Lesbian Bar Project, an Emmy-, Webby- and GLAAD Media Award-winning docuseries and initiative that tells the stories of lesbian queer bars around the world. We were moved to act because at the time there were only an estimated 16 lesbian bars in the United States, and the pandemic threatened to bring that number down even further. There are now more sapphic bars than there were just before the pandemic—about 36 of them in total—but this is down from approximately 200 in 1980. Maybe that doesn’t mean much to you, but for the millions of sapphics living in the U.S., this number is calamitous. As the world laughs at lesbians and sapphics, I want to take a second and tell you what I feel when I walk into one of these bars, which are all unique and irreplaceable in their own way: I feel seen. Sometimes I think Cubbyhole in New York City’s West Village neighborhood knew I was gay before I did. When I walked in there for the first time, before I was even out, I was transfixed by the colorful array of tchotchkes hanging from the ceiling and how the women standing next to me were completely unafraid to express their desire for one another. I knew the minute I was ready to come out, I had a home. I also felt the joy of a new couple falling in love at Seattle’s Wildrose, the quiet confidence of a short king lining up her shot at the pool table at Ginger’s in Brooklyn and the kick of cayenne pepper in Julie Mabry’s crawfish at Houston’s Pearl Bar. Subscribe Lesbian bars don’t just serve lesbians; they serve queer folks across the spectrum, including bisexual, pansexual and trans people. As Elina and I traveled across the U.S. and Europe and to parts of Latin America to document the bar owners, staff and patrons that make up the ecosystems of these spaces, we also became uniquely acquainted with the factors that threaten their existence: gentrification, wage gaps, sexism, environmental disasters, gun violence, rising insurance premiums and political administrations working to annihilate queer people and their families. Lesbian bar owners, like all leaders and entrepreneurs, are imperfect. There have been significant issues over the years at lesbian bars: employee harassment, racism, lack of accessibility, sexual assault and transphobia. All bar owners should be held accountable and should listen to their communities to evolve into safer and more equitable spaces. I also acknowledge my privilege: I am able-bodied, white, cis and from a family system that loves me for who I am. Not everyone has that. Queer people, especially trans and bisexual people, are suffering from disproportionately high levels of depression, and our mental health system isn’t equipped to support them. Immunocompromised people and long COVID are real, and many of my friends are suffering to this day. The people with the least safety net are often the ones for whom a bar closing costs the most. And yet, as we’re seeing with Last Ditch, the queer community often lashes out at each other. It’s also the mainstream media taking the internal conflict and making a mockery out of it, distracting from the real possibility that this bar could close due to financial pressures. A bar that many people loved and needed is facing extinction. Perhaps it’s safer to dissent with one another than with the larger forces trying to eradicate us, but in doing so, we risk destroying the few spaces we have left. Due to the constraints of purity politics—some in good faith, some not so much—lesbian bar owners, almost all of whom are queer women themselves, are forced to be everything for everyone, similarly to how women are forced to be everything for everyone. By asking these bars to uphold impossible standards—standards very few other third spaces are asked to consider—we all end up losing. I want to move as a community toward dialogue, compassionate dissent and collaboration to make our spaces better with the goal of keeping them OPEN and thriving, rather than destroying them from the inside with expectations that are arguably unattainable. Subscribe While I have your attention—for this fleeting second of the news cycle—may I urge us to spearhead a way to keep these small businesses afloat without attacking our own community along the way? Bar owners are left with an impasse: They want to be community-centered, but they also have to make money to keep their doors open. Sometimes they might make business decisions that don’t work for everyone—and that’s partly because different patrons have different priorities and want different things—but these owners deserve the opportunity for productive dialogue**.** We have to work with them and with each other to keep our spaces open, to keep them growing. Lesbian bars raised me into the queer woman I am today. One thing I think about as I reflect on the six years of work we’ve done to document these spaces is that shared, unspoken language I have with a stranger the moment we both walk into one of these bars: the nod, the ease, the not having to explain ourselves. I don’t want to lose that, and neither should you. If objective, nonpartisan, rigorous, LGBTQ-focused journalism is important to you, please consider making a tax-deductible donation through our 501(c)(3) fiscal sponsor, Resource Impact, by clicking this button: Donate
iPhone Duo StandBy Leak Reveals Five Unannounced Faces
We've seen previews of iOS 27 running on the iPhone Duo, including a new StandBy mode that activates even when the iPhone isn't charging. Apple showed the mode in press materials, but leaker pdfu today shared a more in-depth look at some of the options. There are multiple StandBy faces available on the iPhone Duo, five of which we weren't aware of. A Home Camera view will show a single camera feed or a grid of up to nine camera feeds.
Warriors Announce Concerning Kristaps Porzingis Update Before Season
Warriors' training camp is set to begin Tuesday, but roster depth issues are already arising, with Kristaps Porzingis set to miss time.
Scanning the waiver wire for intriguing options
The Penguins would probably figure to not use waivers to boost their lineup, given all the depth they already have. However with four players placed on IR yesterday plus the statuses of Bryan Rust (injured) and Andrei Kuzmenko (personal) still up in the air for the start of the season, the waiver wire could hold […]
5 takeaways from Rams' heartbreaking loss to Broncos
Depth is becoming a concern in the secondary for the Rams following Sunday night's loss to the Broncos.
Yahoo Sports: Do the Knicks have enough frontcourt depth for title defense? 3 reasons for optimism
New York losing Mitchell Robinson stings, but could the champs actually be better off?
Grant Williams on Hornets: "Our depth is ridiculous. I …
Grant Williams on Hornets: "Our depth is ridiculous. I …
Jeglertz hails Man City depth after narrow win over Charlton
Manchester City Women boss Andree Jeglertz praised the depth of his squad after their 1-0 win over Charlton.Jeglertz made several changes to his side but was pleased with the impact of those who came ...
Who features in Brighton's best midfield three?
Brighton's unbelievable midfield depth has got many fans thinking: who gets in our best midfield three?
Colts' New Depth Chart Revealed After Roster Moves
The Indianapolis Colts' depth chart has changed following recent roster moves.
The best NFL free agent quarterbacks available
A number of NFL teams may be looking to free agency for added depth after early season quarterback injuries.
No. 6 UM Dominates Central Michigan Behind Battle-Tested Depth
Darian Mensah makes FBS history and Chris Wheatley-Humphrey flashes explosive potential as the Miami Hurricanes’ relentless roster depth fuels a blowout victory ahead of high-stakes ACC play.
Detroit Pistons PG Depth: How Ebuka Okorie Fits Into Rotation
The Detroit Pistons have ample point guard depth after adding a couple talented floor generals during the summer
Debating How Damaging Phoenix Suns' 2026 Offseason Was
From polarizing extensions to a high-stakes trade for Miles Bridges, Brian Gregory’s latest roster gambles have experts questioning if Phoenix secured its future or surrendered its depth.
Intel Panther Lake Teardown, 18A, BSPD, GAAFET, SemiAnalysis STEEL
Panther Lake debuts the first commercial implementation of backside power delivery (BSPDN), introduces Intel’s first iteration of gate-all-around (GAA) transistors, and showcases their advanced packaging capabilities with its Foveros-S assembly. With Panther Lake, Intel’s manufacturing arc has shifted from nebulous roadmaps to shipped silicon, a significant milestone on their long road back to competitive semiconductor manufacturing. To evaluate the extent of Intel’s comeback, we tore down Panther Lake. The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page. Our teardown traces 18A from its four-sheet RibbonFETs (Intel’s marketing name for GAAFETs) and gate stacks through contacts, frontside and backside wiring, and the bonded carrier. We explain how these material and integration choices improve gate control and reduce resistance, while adding capacitance, thermal resistance, and process complexity. Our measurements put Panther Lake’s 18A compute logic and TSMC N3E GPU logic at similar logic density. However, 18A does not lead TSMC N3P, N2 or Samsung SF2 in peak density. Panther Lake’s CPU cores are incremental updates, and the high-end GPU still uses TSMC N3E. Panther Lake assembles one compute tile, one GPU tile, and one I/O tile atop a passive base tile using Intel’s Foveros-S advanced packaging. Both compute tile variants use Intel 18A. The Xe3 GPU options are a 4-core GT1 tile on Intel 3 and a larger 12-core GT2 tile on TSMC N3E. Both I/O tile variants use TSMC N6. [1], [2] Our analysis centers on the PTL-U compute tile, both the 4-core and 12-core GPU tiles, as well as the 12-lane I/O tile. In conventional chips, power and signal are routed through the same frontside metal stack towards the device frontend. Power rails consume scarce routing resources near the transistors, while tall via stacks carry VDD and VSS from the coarse upper wires to local rails. Backside power delivery (BSPD) moves the main power network behind the transistor layer, to the backside, separating it from frontside signal routing. We covered BSPD and its impacts in 2024. [3], [4], [5] Intel’s BSPD implementation, branded as “PowerVia”, routes power through dedicated backside metals to nano-TSVs, which connect those rails to local source/drain (S/D) contacts. Implementing that separation requires Intel to build the interconnect stacks from both sides of the wafer. The frontside comprises the M0-M14 signal stack, while the backside comprises the BM0-BM5 power stack. M0 and BM0 are closest to the transistors. The nano-TSVs connect the two sides, but Intel patterns and etches each via from the front after forming the contacts. A narrow via runs from the side of the contact deep into the silicon substrate. Intel then completes the frontside signal metal stack, bonds the wafer to a carrier, flips it and removes the original substrate until the buried via tips are exposed. The backside metal stack is then deposited directly on the revealed vias. The nano-TSV and backside-via profiles taper in opposite directions because Intel forms them from opposite sides of the wafer. The transistor structures form the FEOL. Local contacts and nano-TSVs connect them to the wiring. M0 begins the frontside interconnect stack. The silicon carrier remains attached above the frontside interconnects. It supports the device wafer during substrate removal and backside processing and remains part of the finished chip’s thermal path. PowerVia removes the main power distribution from the congested frontside metals, routing supply through shorter and wider backside wires. Its lateral landing still occupies area in the standard cell, so it recovers less cell area than a direct backside contact. [3] Nano-TSVs beside the logic devices carry VDD or VSS from the backside power network, while signal connections continue upward through the frontside metals. Backside Interconnects Samsung SF2 data is included for comparison to Panther Lake’s within this article. SF2 is the incumbent GAA foundry node but lacks BSPD, serving as a useful reference to evaluate 18A. A full teardown of Samsung’s S26 products, processed on SF2, will be shared soon.Nanosheet-cut EDS comparison. The PowerVia supply path runs from the backside Cu rails through Mo-lined W nano-TSVs to the local transistor contacts. In this cross section, the tapered connection spans roughly 150 nm from the contact level to BM0. The Ta liner confines Cu and promotes adhesion to the surrounding stack; the AlOₓ etch stop controls the next dielectric etch above the rail. Dielectric beneath the ribbons electrically separates the devices from the backside wiring and removes the conducting silicon body below the channel. [6] AlOₓ serves as an etchstop (ES), enabling endpointing and protecting the underlying layers. Low-volatility aluminum fluoride reaction products resist the fluorinated plasma, allowing a thin AlOₓ film to protect the metal while the surrounding low-k dielectric is removed. [6], [7]. While the BM0 and layers above the M1 lines show double AlOx layers, Our SMIC N+3 teardown showed single AlOₓ layers. SMIC uses a simpler local AlOₓ substack, while the remaining cap and etch sequence provide the required landing protection. So why double layers? The closely spaced AlOₓ doublets provide two protected endpoints in the etch sequence. Intel documents an AlOₓ/SiN/AlOₓ stack that explains the benefit. The main dielectric plasma etch stops on the first AlOₓ film; a selective wet clear opens that film; a second plasma etch removes the intermediate SiN and stops on the second AlOₓ film. The final wet clear exposes the metal landing surface. SiN is the intermediate dielectric in Intel’s published example. [8] The second stop protects the metal through a cap breakthrough. Wide openings can etch faster than narrow ones, and etch depth varies across the wafer. Metal under an early-clearing opening would otherwise be exposed while other openings still need more etching. Staged protection widens the process window and reduces metal erosion, corrosion and void formation. [8] TSMC documents AlN/AlOₓ/SiOC/AlOₓ above Cu, with AlN blocking Cu diffusion, and a simpler AlN/SiOC/AlOₓ variant that omits one AlOx film. [9] Levels with different opening sizes, aspect ratios, pattern densities and cap materials need different etch margins. A double AlOx stop is useful where another protected endpoint justifies the added processing. The extra film adds formation, selective opening and cleaning steps, plus another set of interfaces to control adhesion, moisture, and stress. These blanket films are opened through the existing via pattern, so each film does not require another lithography mask. AlOₓ adds parasitic capacitance when it replaces lower-k dielectric; two thin AlOₓ films can nevertheless contain less AlOₓ than one thick film. Total thickness, placement, and theintermediate dielectric determine the electrical cost. Deposition chemistry also changes AlOx permittivity and residual hydroxyl content, which can oxidize the underlying metal. [7], [8], [10], [11] The backside stack separates into relatively fine BM0-BM2 wiring near the devices and coarser BM3-BM5 power distribution. The largest pitch increase occurs between BM2 and BM3. BM0’s pitch closely matches the logic-row height, fitting local power delivery to the cell rows. Higher levels aggregate current through larger conductors: routing density becomes less important than low resistance and current capacity as the network approaches the package. This hierarchy provides wide power wiring for the power delivery network without consuming scarce frontside signal-routing resources. [3] The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page. Frontside Interconnects Intel 18A combines Mo-lined W contacts and nano-TSVs with a separate backside Cu power network. Samsung SF2 keeps power on the frontside, using Ti-based contact interfaces and Ta-based barriers and Co liners around Cu wiring. In 18A standard-cell rows, backside power rails supply the devices through nano-TSVs within the cells, freeing frontside routing resources. Samsung’s M0 accommodates both power and signal connections. From the device toward M0, the connection runs through a Ti-based S/D interface, W contact fill, a Mo-lined W via, and the Cu M0 wire. Mo supplies a conductive nucleation and adhesion layer for W, replacing the resistive TiN liner used in conventional W integration. This increases the effective conduction volume within the feature while retaining W fill and its established polishing, cleaning and etching processes. Intel’s Mo/W patent describes this integration tradeoff. The nano-TSV uses the same Mo-lined W construction in the backside supply path. [12] The move from TiN to Mo is an incremental change. While a full Co or Mo fill can also reduce the volume lost to liners in very small features, it requires new integration schemes that increase complexity and risk. Cu remains attractive for wider wires due to its low resistance. As wires and vias shrink, the diffusion barrier consumes an increasing fraction of their cross-section. [12], [12], [14] Intel uses Co/Ru liners at M0-M1, Co at M2-M4, and Nb at M5-M9. The lower-level liners help Cu adhere and reduce void formation during trench fills. Applied Materials’ Endura has new thermal control that facilitate wetting process, so the thin film continuity is good enough that good capillary pressure will drive Cu atoms to the via bottom without voiding. Intel’s choice to use Nb is particularly interesting. Intel’s Nb patent describes a conductive diffusion barrier intended to reduce the barrier’s contribution to resistance relative to conventional Ta-based barriers, particularly at via bottoms where all current crosses the barrier. The patent pairs Nb in coarser levels with the option of lower-cost PVD processing. [15], [16] The upper metal layers support thicker barriers formed through physical vapor deposition (PVD) despite its worse coverage and uniformity. Meanwhile, the lower metal layers require thinner barriers deposited through conformal atomic layer deposition (ALD). Co/Ru adds another material interface and requires controlled deposition and Cu fill. Changing liners and barriers by metal layer allows Intel to optimize interconnect resistance, process complexity, and reliability. [15, 16] RibbonFET, Intel’s name for its gate-all-around FETs (GAAFETs), replaces the FinFET’s vertical fins with four stacked horizontal silicon nanosheets, allowing the gate to surround the channel on every side. The path to GAAFET begins with the planar transistor. A planar MOSFET places the gate above the channel between its source and drain. Pairing an NMOS with a PMOS transistor creates a CMOS inverter, in which the NMOS pulls the output low for a high input, and the PMOS pulls it high for a low input. The gate must retain electrostatic control of the channel to ensure clean switching. As gate lengths shrank, the drain began to compete with the gate for that control, increasing off-state leakage. Electrostatic control was restored through an architectural evolution that raised the channel into a vertical fin and wrapping the gate around three sides. Called “FinFET”, this new architecture packed more effective channel width into a smaller footprint. Further scaling made it harder to maintain both drive current and leakage within smaller cells, and reintroduced the same problems planar MOSFETs faced. Nanosheet GAAFETs close the fourth side by replacing the vertical fin with a stack of horizontal nanosheets, each surrounded by the gate. The tighter electrostatic control suppresses leakage at shorter gate lengths while stacking adds effective channel width within the cell footprint. In a FinFET process, channel width changes in discrete steps as designers must add or remove whole fins. Nanosheet width can instead be adjusted continuously within the process’s design rules. Wider sheets increase drive current, while narrower sheets reduce capacitance at the cost of drive current. Intel 18A uses stacks of four nanosheets each and varies their widths across logic and SRAM. At the process level, adding more sheets to each stack increases effective channel width and drive current, but complicates fabrication. RibbonFET vs MBCFET Samsung began GAAFET production in 2022 with SF3E, following with SF3 and now SF2. Its ‘MBCFET’ provides a useful structural comparison with Intel’s first RibbonFET implementation. [17] STEEL is digging deeper into SF2, used in the Exynos 2600, and TSMC’s GAAFET N2, used in Apple’s A20 Pro, in upcoming newsletter articles. We’re throwing some teasers on X. Let’s compare Samsung SF2’s MBCFET with Intel 18A’s RibbonFET. Subscribe Even to the untrained eye, Intel’s extra nanosheet is obvious. Intel stacks four ribbons to Samsung’s three. Samsung’s sheets are much wider in these fields, so both sheet count and width matter to the available channel perimeter. Sheet width also changes which silicon surfaces carry current. On conventional (001) silicon, wide nanosheets emphasize the broad top and bottom surfaces, favoring electron transport; the larger sidewall contribution in a narrow sheet favors hole transport. Thinner sheets improve gate control but increase confinement and scattering. This makes width and thickness part of the NMOS/PMOS balance, alongside strain and threshold voltage. [18], [19] GAAFET designs like 18A use different work-function-metal (WFM) stacks for NMOS and PMOS. Around each ribbon, a thin SiOx interfacial layer separates the silicon channel from the HfOx high-k dielectric, with La providing dipole tuning and the WFM wrapping the dielectric. NMOS uses a TiAl-based stack, while PMOS uses TiN WFM. W fills the remaining gate trench, providing a lower-resistivity path where the work-function layers are no longer needed. In this field, the PMOS stacks leave room for W between ribbons, while the NMOS stacks occupy more of those gaps. A silicon-based dielectric marks the P/N boundary, allowing the PMOS and NMOS gates, sharing the same gate trench, to be processed sequentially. Fast logic paths, retention circuits, and SRAM need a family of threshold options. Changing threshold without substantially changing device dimensions, capacitance or fabrication complexity is valuable. FinFET processes typically use different work-function-metal stacks. In a four-ribbon GAA stack, the narrow sheet-to-sheet gap limits how much WFM can fit around each channel. La in the gate dielectric creates interfacial dipoles at the SiOx/HfOx boundary, shifting effective work function and tuning threshold voltage. This gives Intel another control alongside its NMOS and PMOS WFM stacks. Low-threshold devices improve critical-path drive; higher thresholds reduce leakage elsewhere. Dipole tuning is especially useful in GAA because it changes threshold without consuming the narrow intersheet gap with thicker WFM. Precise control of La incorporation, diffusion and interface quality has long been a challenge, limiting viability in high volume production but is now seen from every leading-edge foundry. Intel’s patent describes depositing a dipole-forming oxide above HfOx and annealing it toward the interfacial oxide before completing the work-function and fill metals. This separates threshold tuning from the space available for metal. Newer research addresses the thermal cost: imec’s 2026 dipole-middle research inserts the shifter between two HfOx depositions, shortening the diffusion path while protecting SiOx during patterning. [20], [21]Matched-cut EDS, Intel 18A (left) vs. Samsung SF2 (right). Intel retains raised source/drain epi beneath its contacts, while Samsung recesses W deep into the epi to form a V-shaped Ti-lined interface. The deeper contact increases metal-to-semiconductor area and shortens the current path from the lower sheets, reducing contact and spreading resistance. It also removes epi volume and brings the contact etch closer to the channel ends. Retaining more epi preserves the material available for strain transfer, especially from SiGe into PMOS. These geometries balance contact access against stress engineering and etch margin. [22], [23] Samsung stacks three sheets to Intel’s four ribbons, and both processes use sheet width to tune drive strength. In our Samsung cross-sections, widths range roughly from 19 to 30 nm in the NPU rows and 37 to 50 nm in the CU cell. The Samsung nanosheets taper, with the widest sheet at the bottom and the narrowest at the top. Both processes use HfOx gate dielectric and Ti-based work-function stacks, with Al in the NMOS stack. In the Samsung devices shown here, the dielectric and WFM occupy the intersheet gaps, leaving W above the top sheet. Intel’s PMOS stack leaves more room between ribbons, and W fills those gaps while the thicker NMOS stack leaves W mainly in the upper trench. Gate-stack EDS maps. The W between Intel’s PMOS ribbons provides a conductive path close to the lower gates. Where WFM fills the entire gap, the gate still surrounds the channel, but voltage reaches it through the more resistive work-function films. Thinner WFM and dipole tuning preserve room for low-resistivity fill; Mo and Ru are alternative fill metals being developed for further scaling. [24] A masked, sequential WFM flow explains the different gate heights and inter-nanosheet fill. The proposed sequence below shows how separate NMOS and PMOS work-function steps produce that geometry. Enabled by the BSPDN process, Intel replaces the dense-logic silicon subfin with dielectric, removing the parasitic conduction path below the ribbons and reducing substrate-related capacitance. A retained silicon body as in classical, non-SOI, planar and FinFET designs needs junction and punchthrough-stop engineering to suppress leakage. Dielectric isolation makes that leakage less sensitive to the subfin doping profile but adds removal and fill steps. It also weakens the direct thermal path through silicon, making the contacts, metal stacks and package more important for heat extraction. [24], [26] Fluorine is concentrated around selected Intel device structures in the maps. WF6 is a standard precursor for W nucleation and fill, while barrier films protect adjacent dielectrics from fluorine attack. Low-fluorine W processes reduce the residual-F burden. Chloride-based precursors avoid introducing F during W deposition, but require control of chlorine attack, nucleation and fill quality. The integration target is a continuous, low-resistance W path with a thin protective liner and minimal chemical damage to the surrounding stack. [20], [27], [28] The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page. We measured cell height, gate pitch, metal geometry, and ribbon dimensions at the XTEM sites shown below. The tables group these dimensions by site and device polarity. Our “sheet cuts” cross the silicon channel and show the ribbons end-on. “gate cuts” run along the channel through successive gates. The 18A logic cell dimensions point to a five-track logic library while the N3E and Intel 3 cell dimensions evidence a seven-track logic library. The DDR-PHY uses wider M0 wires and much larger spacing than core logic. That trades routing density for lower wire resistance and weaker coupling between neighboring nets. The geometry suits the current delivery and coupling requirements of analog, clock, and I/O circuitry. PowerVia lets 18A combine a compact cell height with wider M0 geometry by moving the main power rails off the signal-routing tracks. That relaxes local wire scaling while preserving a small cell footprint. Cell height and gate pitch set the geometric density; pin access and routability determine how much of it a real block can use. [29] The biggest takeaway from our gate-pitch measurements is that Intel 18A compute logic and TSMC N3E GPU logic have similar density in the Bohr representative-cell model. The 18A example is 18.6% denser than the Intel 3 GPU example. Gate pitches are nearly identical across the three sites, so cell height drives most of the difference. The Bohr model combines a four-transistor NAND2 spanning three gate pitches and a 32-transistor scan flip-flop (SFF) spanning nineteen pitches, weighting their densities 60:40. The sensitivity column shows how independently changing cell height and gate pitch by ±1 nm changes the result. This compares representative cell geometries; whole-die density also depends on cell mix and placement. The 18A P-core gives M0 substantially more metal cross section than the N3E vector engine. Treating each profile as a trapezoid gives 2.63 times the area per line and 1.84 times the area after normalization by routing pitch. The larger section reduces the geometric contribution to line resistance and lowers current density for a given current. Taller and wider wires also add capacitance, so circuit delay depends on the balance of resistance and capacitance. The DDR-PHY has less metal area per routing width than the 18A core fields, while remaining above N3E. [30] Area = height × (top CD + bottom CD) / 2, including liners. Area/pitch normalizes by routing width. Taper is the symmetric sidewall angle from vertical, with the largest angle belonging to the DDR-PHY. Compute tile The measurements show how ribbon dimensions and gate-stack geometry vary across the compute tile and between NMOS and PMOS to balance channel drive, gate load and the space needed for the dielectric/WFM stack across logic, SRAM and the DDR-PHY. Width mainly changes available channel perimeter; thickness also changes electrostatic control and carrier confinement. Gate-stack thickness then determines the space left for low-resistivity fill P-core and LP E-core logic Both the P-core and LP E-core use multiple nanosheet widths. Widths are measured on high-magnification XTEMs while wider-field images demonstrate additional width choices within the LP E-core. Multiple widths are expected even within an LP E-core. Timing-critical paths, buffers and cells with different fanout need different drive strengths. The lower-magnification fields show this width diversity beyond the sites quantified in the table. L2 and L3 SRAM GAA gives SRAM designers another way to balance the pull-up (PU), pass-gate (PG), and pull-down (PD) transistors. FinFET bitcells set device strength through fin count while GAA adds nanosheet width as a sizing knob. In a 6T SRAM cell, a strong pull-down relative to the pass-gate limits read disturbance, while a strong pass-gate relative to the pull-up improves writability. During a write, the pass-gate and write driver pull the node storing “1” below the inverter trip point. During a read, the pull-down holds the node storing “0” low. Bias, threshold voltage, mismatch and assist circuitry set the remaining margin. FinFET high-current cells commonly use a PU:PG:PD fin-count pattern of 1:2:2, a device-sizing ratio rather than a current ratio. Ribbon width lets Intel balance SRAM strengths without adding whole fins. The L2 cell uses its narrowest ribbons for PU and widest for PD, improving writability and read stability respectively. Intel’s disclosed HCC operates without assist; its denser HDC uses negative-bitline write assist. Pulling the selected bitline briefly below ground increases pass-gate overdrive so it can overpower the pull-up at lower supply voltage. That buys density and low voltage writability at the cost of boosting circuitry, switching energy, and additional voltage stress that must be controlled. [31], [32] Four rectangular ribbons give the perimeter = 8 × (width + thickness), before corner rounding. PG/PU is 1.49 and PD/PG is 1.16. The L3 structures closely resemble L2 in layout and cell height. Fewer L3 nanosheet widths are tabulated because fewer high-magnification images were available. DDR PHY The DDR-PHY trades density for controlled analog behavior and reliable off-chip signaling. It contains drivers, receivers, delay circuits, and calibration logic that set drive strength, sampling time, and voltage margin. Repeated four-sheet devices with similar widths fit the use of regular transistor units for matching and programmable drive. Its wider local wiring provides room for current delivery and separation of sensitive signals, while consuming more area than a dense core-logic grid. The layout serves the memory channel’s electrical requirements as well as digital logic density. [33] The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page. Intel 3 GPU devices Vector engine logic Intel 3’s XVE logic uses two-fin PMOS and NMOS devices with power rails in M0. Its cell height and M0 pitch give a seven-track geometry, two tracks more than the 18A logic. One-fin groups also appear among the two-fin devices. Intel 3 L2 SRAM The Intel 3 L2 SRAM uses the familiar HCC sizing pattern: one PU fin, two PG fins, and two PD fins. N3E GPU devices Vector engine logic The N3E XVE field contains repeated two-fin devices with seven-track cell geometry. N3E remains a FinFET process, giving Panther Lake a direct FinFET-to-RibbonFET comparison. N3E L2 SRAM The N3E L2 SRAM uses the same PU:PG:PD fin-count pattern of 1:2:2. Panther Lake-U follows Lunar Lake’s floorplan quite closely. Both pair 4 P-cores with 4 LP E-cores and NPU, media and display engines in similar locations. Lunar Lake also uses Xe2, the direct predecessor to Panther Lake’s Xe3 GPU. This makes Lunar Lake the most direct basis for our comparisons. Arrow Lake differs in core count and uses the older Xe-LPG GPU architecture, so we only use it where it offers a more direct component-level comparison. Compute tile Panther Lake compute-tile floorplans remain sparse even months after launch. Intel 18A’s backside metal and dielectric stack must be removed without damaging the underlying structures before a clean transistor-level floorplan can be imaged. Most published die shots hide or heavily process the background, but we are quite proud of the die shot we achieved and are excited to show the work we have done. We measured the areas of the key components on the compute tile and compared them with their Lunar Lake predecessors on TSMC N3B. These help us to capture changes in block area and compare the two chips across process nodes and designs. Our total tile areas exclude the scribe-line area. The compute-plus-GPU subtotal below uses the PTL-U compute tile and GT1 GPU; it excludes the I/O tile and passive base. Individual block areas use the boundaries marked on the floorplans The compute-plus-GPU row is recomputed from the displayed PTL-U and GT1 areas. Component rows use their stated per-region counts and are not an additive partition of the whole tile. The P-core area remains almost unchanged between Lunar Lake and Panther Lake, despite L2 capacity increasing from 2.5 MiB to 3 MiB. Arrow Lake uses the same Lion Cove core as Lunar Lake but also has a 3 MiB L2. Cougar Cove fits 20% more L2 into the same P-core area. The larger private cache keeps more of each core’s working set close to its execution units, reducing access to shared L3 and DRAM. Extra capacity adds storage leakage and lookup energy, so designers balance it against avoided lower-level accesses. The shared P-core L3 cache also shrank by 14.8%. [2] Cougar Cove combines a similar footprint with Intel’s reported power-efficiency improvements. RibbonFET’s tighter channel control reduces leakage, while PowerVia reduces supply droop and allows tighter voltage guardbands. [1] Darkmont’s four-core LP E-core cluster is 5.0% smaller than Skymont’s on Lunar Lake, with most of the reduction in its L2 regions. The 1 MiB region shrank by 8.4% and the 1.5 MiB region by 14.9%. The tag arrays also use one fewer visible row. Tags identify which memory addresses the data array holds, so rearranging them changes the cache’s layout and wiring without requiring less data capacity. [2] The LP E-cores share one L2. This pools capacity and avoids duplicating all the cache machinery, but the four cores contend for its banks and bandwidth. Their separate cluster also keeps light work away from the performance cluster and its L3, allowing that larger domain to sleep. [1], [2] Cache area includes more than the storage cells. Tags identify each line, decoders select rows, sense amplifiers read the small bitline signal, and wires connect to the banks. Splitting an array into smaller sections shortens wordlines and bitlines, improving access speed, but duplicates peripheral circuits. Panther Lake’s smaller cache regions therefore reflect the complete memory implementation, including how much of each region is devoted to storage. [34] Unlike Meteor Lake and Arrow Lake, Panther Lake has no separate SoC tile. The NPU, LP E-cores, memory controllers, PHYs, media and display engines now share the compute tile. This removes an active die and keeps CPU memory traffic on one die. The cost is moving PHY and I/O-related circuitry onto 18A: drivers, receivers and analog circuits must still meet external voltage, loading and signal-integrity requirements, so their area does not shrink like dense digital logic. [1], [2] The biggest shrink comes from the NPU, which occupies 36.9% less area. NPU 5 consolidates the same total INT8 MAC count into half as many neural compute engines. Each of the three NCEs has a larger MAC array to make the complete NCE envelope 22.6% larger than an NPU 4 engine. Consolidation also halves the number of scratchpads and SHAVE DSPs, from 12 to 6. The MAC array handles matrix multiplication and convolution, while SHAVE executes vector and custom operations that fit the array poorly. [1], [2], [35] The paired floorplans identify each NCE envelope and its scratchpad, MAC, and SHAVE regions. Each measured MAC polygon is counted once per NCE in the area accounting below. The scratchpads store weights, activations, and intermediate results near the MAC arrays, allowing repeated use without fetching them again from DRAM. Halving their number delivers the largest measured area saving but leaves less local storage for the same total MAC count. Layers that no longer fit locally require smaller working tiles or more transfers of intermediate data. The benefit depends on keeping the enlarged arrays busy while managing that tighter storage budget. [36] NPU 5 also adds native FP8. Using half the operand width of FP16 reduces storage and transfer demand, helping workloads fit the smaller local memory budget. Lower precision and format-dependent range make scaling and model validation part of deployment. Hardware activation functions further reduce work that would otherwise occupy the programmable DSPs. [1], [2] Microsoft requires an NPU to deliver at least 40 TOPS for Copilot+ PCs. Both Lunar Lake and Panther Lake meet this threshold, but Panther Lake uses significantly less silicon. GPU tiles Panther Lake is Intel’s first product with Xe3, its latest GPU architecture. It offers two different GPU tiles: a smaller GT1 tile with 4 Xe3 cores on Intel 3 and a larger GT2 tile with 12 Xe3 cores on TSMC N3E. Panther Lake allows us to compare the same GPU architecture across both Intel 3 and TSMC N3E. Wildcat Lake adds a third Xe3 implementation on Intel 18A. A future newsletter will detail Xe3 and its implementation differences across all three process nodes. GT2 scales Xe3 to a different physical layout, with render slices arranged vertically instead of GT1’s horizontal arrangement. Slice placement sets the distances to shared cache banks and the D2D interface. Those wires consume area and add delay, so scaling the number of Xe cores also requires a new balance of cache placement, routing and timing. [1] What’s immediately obvious is that the GT2 tile on TSMC N3E has much smaller Xe cores than GT1. These block areas include logic, caches, and routing. An Xe core on the GT1 tile is ~69% larger than one on Lunar Lake, and ~55% larger than one on GT2. Intel 3 therefore uses substantially more area per Xe core. The block-area gap exceeds the measured logic and SRAM density gaps, bringing routing, timing targets, cell mix, and floorplan allocation into the comparison. The measured vector/matrix engine region is almost unchanged between Lunar Lake and Panther Lake’s GT2 tile. Xe3 retains eight 512-bit vector engines and eight 2048-bit XMX engines per core. Its gains also come from feeding those engines more effectively: more resident threads hide stalls, and variable register allocation lets shaders trade registers per thread against the number of threads kept active. [1] The shared L1/SLM capacity increased by 33% from 192 KiB to 256 KiB, while its area increased only 5%, raising effective density by 27%. L1 retains reused cache lines, while software-managed SLM lets a thread group share data locally. Both reduce traffic to more distant memory. Allocating more SLM per group can also limit how many groups reside on a core at once. [1], [37] The GT1 tile carries 4 MiB of L2 against 16 MiB on the GT2 tile. GT1 divides its L2 cache into four 1 MiB banks, while GT2 uses eight 2 MiB banks. Each bank contains 128 macros, but each N3E macro stores 16 KiB, twice the Intel 3 macro’s 8 KiB capacity. The N3E macro is only 54% larger while holding twice as many bits, giving it 30% higher density: ~23.7 Mbit/mm² versus 18.3 Mbit/mm². Including bank-level circuitry, the gap widens to ~16.9 Mbit/mm² on GT2 versus ~10.4 Mbit/mm² on GT1. GT2 gains density with its macros storing more bits per unit area, and those macros occupy more of each cache bank. Larger macros spread decoder and sense-amplifier overhead across more storage, while a more compact bank layout reduces the share spent on control and routing. The compromise is longer wordlines and bitlines that carry more capacitance. [34] I/O tile Panther Lake uses two I/O tile variants, both fabricated on TSMC N6. The smaller one provides 4 PCIe 5.0 and 8 PCIe 4.0 lanes and serves lower-tier systems as well as those without a discrete GPU, while the larger one adds 8 PCIe 5.0 lanes, bringing the total to 20 lanes, for discrete-GPU connectivity. Panther Lake SKUs with the larger 10- or 12-Xe GPUs use the smaller I/O tile. [38] The smaller I/O tile adds a PCIe 4.0 block and a Thunderbolt block to Lunar Lake’s I/O layout, providing four additional PCIe 4.0 lanes and another Thunderbolt 4 port. Its repeated N6 blocks retain nearly identical areas and layouts. Reusing these proven PHYs and controllers avoids porting and requalifying external interfaces on 18A, where faster digital logic offers less benefit to circuits constrained by the off-chip link. [38] SemiAnalysis’s teardown lab (STEEL) dives deep into the world’s advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. We’re hiring technical experts from system to transistor and everywhere in between. Check out our Careers page. Panther Lake offers scalability and modularity through its disaggregated packaging that partition compute, GPU, and I/O silicon into separate tiles allowing for a suite of tile configurations. This partitioning makes the package part of Intel’s node economics as it determines how much leading-edge wafer area each product consumes, which functions can remain on other processes, and how much configuration freedom Intel can offer from a shared set of tiles. Furthermore, fabricating the compute and GPU tiles separately confines the new 18A process to the compute tile and allows graphics and I/O to use other, more established, and more cost-effective processes. For Panther Lake, the GPU and I/O tiles are assembled alongside the compute tile on a passive silicon base using Foveros-S. Intel’s current technology brief lists a nominal 36 µm pitch for Foveros-S. Through-silicon vias (TSVs) in the base connect the fine wiring above to the larger package connections below. The functional tiles sit side by side on that passive base in a 2.5D configuration. [39] Our cross-section through the compute and GPU tiles shows the package’s wiring hierarchy. Microbumps connect each active tile to the passive silicon base; its fine redistribution layer (RDL) carries the short, dense tile-to-tile links. TSVs carry connections through the base to the package substrate, which fans them out to the much coarser motherboard solder joints. The base supplies interconnect, while computation remains in the active tiles above it. [39] At the compute-tile edge, the higher-magnification inset shows a local microbump spacing of approximately 25.24 µm and a feature width of 12.33 µm. These local spacings are finer than Intel’s nominal Foveros-S value. The X-ray fields further confirm tighter neighboring bumps, consistent across every die-to-die area found on each tile. Additional X-ray analysis is offered after the paywall. Putting the memory controller beside the CPU removes the D2D transfer that CPU memory requests required in Meteor Lake and Arrow Lake. This avoids the extra transmitter, receiver, and link traversal, saving interface energy and latency. Panther Lake’s separate GPU still crosses a D2D link to reach DRAM, so its larger local caches also help contain package traffic. [1], [40] Smaller dies are less likely to contain a random fatal defect, and screening them before assembly prevents one bad tile from consuming a complete package of good silicon. Reuse also spreads design and qualification work across more products. Against those gains, Intel pays for the passive base, D2D circuits, extra bonding and test steps, and losses during assembly. Cost per working product across the portfolio captures the combined effect of wafer yield, reuse, test, and assembly. [29] Wildcat Lake packaging Intel launched Core Series 3, formerly Wildcat Lake, on 16 April 2026 for value mobile and edge systems. Wildcat Lake keeps 18A but removes the passive base and combines more functions on one die to simplify the package. The two products therefore reveal two distinct ways to commercialize the same leading-edge process. [41] Wildcat Lake’s 18A die combines up to two Cougar Cove P-cores, four Darkmont LP E-cores, two Xe3 cores and a smaller NPU. A separate platform-controller die supplies I/O, connected through UCIe, Intel’s first processor implementation of the standard. Consolidating graphics remove a tile boundary and the passive base, reducing assembly complexity for a modest-bandwidth value product. It also ties CPU and graphics scaling to the same die, giving up Panther Lake’s ability to swap in a much larger GPU. [42], [43] In July 2021, Intel CEO Pat Gelsinger set out an ambitious process roadmap aimed at regaining performance leadership by 2025, later described as five nodes in four years. Five years and one CEO later, Intel’s comeback story is not as unambiguously positive as Pat may have hoped. [44], [45] Intel once set the pace for process technology, bringing high-k metal gate technology and FinFETs into volume production years ahead of the rest of the industry. Its 22 nm FinFET process reached consumers with Ivy Bridge in 2012. [46] Intel’s integrated device manufacturing (IDM) model allowed its architects and process engineers to co-optimize products and processes. Starting with Sandy Bridge, Intel dominated x86, while AMD struggled with Bulldozer. That lead faltered at 14 nm and broke at 10 nm. Intel targeted a massive 2.7× density increase, but the node arrived years late and required several revisions before it could support Intel’s full lineup. This delay forced Intel to stretch 14 nm across six generations, while TSMC moved ahead in process technology and AMD recovered in x86. By 2019, Intel was still shipping 14 nm across most of its product stack, with its 10 nm client ramp focused on Ice Lake mobile processors. Meanwhile, TSMC was shipping N7 and N7+, and AMD’s Zen 2 compute chiplets used N7 to raise core counts and improve efficiency. Intel’s process failures were central to its decline, but unsound business decisions furthered their downward slide. Product delays compounded product mistakes, pushing client, server, and FPGA roadmaps off schedule. Several attempts to enter AI (Nervana and Gaudi) and networking (Tofino) also failed to establish lasting businesses. Intel’s recovery has focused on consumer CPUs and advanced packaging. Tiger Lake, Alder Lake, Lunar Lake and now Panther Lake have restored Intel’s consumer roadmap. On the process side, Intel 4 shipped with Meteor Lake, Intel 3 with Granite Rapids and Sierra Forest, and Intel 18A with Panther Lake. Intel has also made advanced packaging part of its foundry offering. However, Intel is still playing catch-up in servers. Several Xeon generations arrived years late and trailed contemporary AMD and Arm server CPUs in performance, efficiency, and core count. The process roadmap is back, but Intel does not hold the same process-technology leadership position it held prior to 10 nm. The introduction of gate-all-around nanosheets and backside power delivery are two of the biggest changes to transistor integration in a decade. Intel took on both changes at once: 18A paired its first RibbonFET with PowerVia in Panther Lake. Panther Lake is a substantial manufacturing milestone. Our cross-sections show how RibbonFET and PowerVia reshape local contacts and wiring, while the floorplans show where architectural consolidation and process choices save area. A sustained competitive lead depends on product performance, cost, yield, and the next implementation. The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page.. 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D'Aneglo Russell Could Make Sense for Trail Blazers
Fresh off his Memphis release, the veteran playmaker offers Portland low-risk backcourt depth and elite shot-creation to fortify a roster suddenly aiming for a Western Conference playoff run.
Quick hitters: O-line health, safety depth and Dan Campbell’s first days in Detroit with Glenn
Allen Park — Detroit Lions coach Dan Campbell and quarterbacks coach Mark Brunell met with the media on Friday. Here are the noteworthy items from those conversations. Healthier up front, banged up in the back It’s good news, bad news on the injury front. First, the offensive line is going to be far closer to full strength with starters Blake Miller (knee) and Christian Mahogany (hip) on track to return to the lineup. That provides stability the offense lacked against Buffalo, particularly at right tackle, where backup Larry Borom allowed 11 quarterback pressures and committed a trio of penalties. Subscribe However, with that same unit, veteran Ben Bartch (foot) is likely to miss Sunday’s matchup with the Jets. The left guard competition that’s been ongoing since May has effectively been whichever option is healthy that week. In the back end, safety Thomas Harper (ankle) is also unlikely to be available on Sunday. That leaves the team precariously thin at the position following Avonte Maddox going on injured reserve this week. Christian Izien is expected to get the start alongside Chuck Clark. “Izzy's been working a lot back there and had a full week,” Campbell said. “And he's gotten a ton of work this week, a ton of reps, full-speed reps. ‘This is what you're going to do, this is the calls’ and just dousing him with full-speed reps and he's done a good job this week.” Safety depth is the bigger concern. The team is expected to count on some combination of Jalen Mills, who signed to the practice squad on Monday, Bishop Fitzgerald, the undrafted rookie poached off the Steelers’ practice squad on Tuesday, and rookie cornerback Keith Abney, who doesn’t have experience at safety. “I'll say this about Abney, man, for a rookie, he's a pretty dang smart, conscientious, aware football player that's got a ton of room to really take off,” Campbell said. “…He's young. He's another one, he just needs reps and reps. But, if we need it, that'll be a guy who may have to go in for us.” You can check here for the full injury report, with game designations, later this afternoon. Reflecting on the past Responding to comments made by Jets coach Aaron Glenn this week, Campbell reflected on his earliest days with the Lions, before the coaching staff had been fleshed out and it was just he and Glenn at the facility working through what they wanted things to look like. “It was just he and I in the lab,” Campbell said. The coach said the two would fill the whiteboard that remains in current coordinator Kelvin Sheppard’s office top to bottom with notes about philosophy, coaching style, team identity and the type of players they wanted to target. “He looks different than me,” Campbell said. “I'm taller, I'm whatever. He's quicker. All these different things, man, but we're really the same. I mean we're so much the same. And he's the defensive version, I'm the offensive version. He was my right hand man. …It was fun, man. Those were good days.” Campbell said it was one of the best and worst days of his life when the Jets hired Glenn to be their coach. “AG means the world to me,” Campbell said. “He's one of my dearest friends because I know what he's made of. “…It's because you know you're losing a little piece of you. That's what he meant to me and to us. So, that's hard.” Traits under center A couple of weeks back, Sheppard noted that Brunell had identified Saints quarterback Tyler Shough as the best prospect at the position ahead of the 2025 draft. On Friday, Brunell confirmed his evaluation and explained what he looks for when studying a young quarterback. Here’s the full answer: “Young quarterbacks, you have to look at everything, you know? I look at guys coming out of college just like I look at any free agents that we might be looking at, or guys that we might add to our roster. Do they take care of the ball? Are they on time? How is their decision-making? How are their feet? “It's tough because you look at a college player, you don't understand what they're trying to do offensively, what their reads are, but you can identify when a guy is accurate, obviously, and when the ball's getting there on time. If there are a lot of interceptions, it raises a red flag. And I think with a lot of the spread offenses of what you're seeing, when you see a young player and they're running some pro concepts and he's having to make protection calls, and he's getting the right play out of the run game, and when there's a lot on his plate and he's executing it very well, and he's managing all of that, that really jumps out at you. It’s really hard to find. “That's one thing we saw with Luke Altmeyer. He had a lot of experience. We call it, ‘Hey, he's playing quarterback.’ And what does that mean? It's not just completing passes. It's getting guys lined up, getting the right play, getting the protection call right, just fixing some problems, being able to progress (through reads). And there's still some young guys out there that can do that at a high level, which is good to see.” Regarding Altmyer, who competed for the team’s backup job through the offseason and currently resides on the practice squad, Brunell acknowledged physical development slows once the season starts, because there aren’t reps to go around. However, there’s still extensive mental development that’s ongoing. “The key for him is approach the game as if you're the starter, mentally,” Brunell said. “And that's really all you can do. Approach the game as if you're the starter and be good in the (class)room. You come in alongside Jared (Goff), and you come in alongside Josh (Dobbs) and (do) whatever they need. And if you get an opportunity to talk to Luke, he'll tell you he does have a lot of responsibilities besides just getting donuts for us on Saturday. “For him, it's mentally staying focused, and even though there's really no chance this Sunday of him playing, he has to approach it as if he's taking the first snap and playing the whole game. So what's our game plan? What are our checks? What are we anticipating? And then during the game, we keep him involved as far as looking at coverages and pressures. And so, really, for him, it's just a mental game. And for now, that's all we can do.” Reason for more zone The Lions have significantly increased their usage of zone coverage on defense this season. I asked Campbell if that was a reaction to their personnel or driven by the focus to generate more turnovers, given it can be easier to produce interceptions when you can keep eyes on the quarterback while playing zone. “I think it was a little bit of both,” Campbell said. “We just felt like this would suit us a little bit better up to this point, and then be disruptive and get takeaways, which worked well Week 1. We had two (opportunities) last week against Buffalo we weren’t able to get, but they’re there.” I followed up by asking how much the combination of heavy blitzing with the back end playing zone has contributed to some of the early-season coverage woes, since adding extra players to the pass rush means leaving the coverage short-staffed. “I mean, it’s challenging, and that’s why a lot of the things we’ve done in zone, for the most part, have been to reduce that stress level back there,” Campbell said. “But that also requires the front getting there. And if you don’t get there, we already kind of talked about that, but there (has to be) a trust there.” The alternative, Campbell explained is sending four and it taking longer for the rush to get home, which can create different problems for a defense. “You can bleed yards,” Campbell said about the strategy. “It gets a little longer and it’s dink-and-dunk and run after catch. …So, we do what we think is right by what we feel like our personnel (does well). But also the game plan, who you’re going in to play, the matchups, their offense. “We’re not stuck on one way.” Detroit Football Network is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber. Subscribe
'If you do want to be a criminal, there is no better place to do it': Author Rose George dives into the dark depths of the fishing industry
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Proposition 4: Allow public financing of political campaigns
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Vikings Land Surprising New Weapon in 2027 Mock Draft
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How lip-syncing to AI let Forced Entertainment ‘play the game of theatre’
Today we have a fascinating piece by long-time Forced Entertainment fan Ben Kulvichit, speaking to Tim Etchells about their latest show Cold Sweat, how they are integrating lip-sync and AI voices into their work, the question of ‘authenticity’ on stage, and how lip-sync has even opened the door for them to make “something a little bit like drama”. This piece is a paid partnership with the Southbank Centre, where you can see Cold Sweat next month – we’re very grateful to the Southbank Centre for their ongoing support for Exeunt. Holly Williams ‘It was immediately interesting and uncanny’ **By Ben Kulvichit** “Is the microphone on?” So goes one of the opening lines of Signal to Noise, delivered by a human performer lip-syncing to an AI-generated voice. The voice is American, cheery but sluggish, slowed down into a gelatinous drawl. It repeats ad infinitum in a farce of stuckness; an answer never materialises. I find myself asking the same question as I hop on a Google Meet call with Tim Etchells, the artistic director of Forced Entertainment. We spend five or ten minutes frowning at each other, muting and unmuting, me gesticulating in semaphore into my webcam, checking if I am coming through now, restarting the laptop. To Etchells, I appear exaggeratedly mouthing words, my voice missing. In this gloopy purgatory of broken communication, life imitates art imitates life imitates art. We try a Zoom instead. Forced Entertainment, the pioneering British theatre company who have been at the avant-garde of performance since the 1980s, turned an interesting artistic corner with Signal to Noise, created on the occasion of their 40th anniversary. The whole performance employed this lip-sync technique to AI voices; on the face of it a left-field move from a company whose identity has long been grounded in the earthy, immediate presences of its performers and its unassuming, low-tech approach to theatricality. The technique, however, turned out to provide the company with a “rich new seam” of artistic enquiry, and has now spawned a trilogy of works. The second instalment, Cold Sweat, plays at Sheffield Theatres, Southbank Centre, and Lancaster Arts in October, while the third part, Everything Must Go, has been touring in Europe and is slated to come to the UK in 2027. As is often the case with Forced Entertainment shows, the main conceit for this work didn’t arrive until quite late. They were “four or five weeks into rehearsals for Signal to Noise,” Etchells recalls, and getting nowhere. Away from rehearsals, he had been playing around with feeding “weird texts” to AI voices to see how they would cope with them – “basically for my own amusement” – and was compelled by the uniformly “serviceable, benign, good-natured” tone they would read in, no matter how poetic, fractured or experimental the writing. On a hunch, he brought some examples into rehearsals and the performers gave lip-syncing a go. “It was immediately interesting and uncanny,” he recalls, with the performers having to deal in the moment with the problem of mapping themselves onto another artificial ‘performer,’ which itself was dealing with the problem of a very human text. “Almost all the writing for these projects would be useless to us unless it was done in this way,” says Etchells. “We wouldn’t know what to do with it. It’s too poetic. It’s too fictional. It’s too tangled.” But exploring lip-syncing along to the text has opened “an enormous reservoir of ways of thinking about writing and performing.” Subscribe to Exeunt, and get two in-depth pieces on theatre a week, direct to your inbox Subscribe Forced Entertainment have long been sifting through the detritus of popular culture, from daytime TV to end-of-the-pier vaudeville, magic acts and clown shows, to find frameworks for their own unusual entertainments. Lip-syncing, then, makes sense for them to experiment with. As a mode of performance, it’s wired into popular consciousness through pop stars trying to convince stadium audiences of their liveness, or those same voices as channeled through the made-up lips of contestants on RuPaul’s Drag Race, or movie dialogue spreading virally through the host bodies of TikTok users. For Etchells, lip-syncing is often about “approaching real voices and trying to take on their aura,” subsuming that original human presence into yours. “There’s a very basic, elemental sort of theatre magic to it, produced in this very easy way.” This broad approach resonates with instances of lip-syncing within contemporary performance, too. In works like Re-Member Me and Showmanism, performance artist Dickie Beau acts as a kind of spirit medium for archival recordings (this process of re-membering – as in, giving corporeal form to voices – relies on his masterfully precise actor’s technique), while Frankie Thompson is similarly possessed by a host of characters ranging from a nine-year-old Jacob Rees-Mogg to Cliff Richards, all of whom she finds compellingly nauseating, in the exorcism ritual that is her latest show, Horrible Things. What’s different about Forced Entertainment’s use of lip-syncing is that here, there is no original presence to be channeled. The performers are instead taking on what Etchells describes as “the voices of nobody,” or rather the “phantasmic, aggregated echoes” of the many many voices on whose data the AI has been trained, and which are now conjuring into existence words they never actually said. There is a sort of mournful, empty quality to these voices, having “washed up” far away from the people they originally belonged to, to find themselves in stranger’s mouths listing objects, wondering if anyone can hear them and glitching in interminable loops. There is a cold, sad anonymity to it all. Etchells remarks that occasionally the software company he used has notified him that particular people are withdrawing their voices from the platform, instructing him to cease use of those voices. Using these technologies in performance certainly brings up ethical questions around digital rights, consent, identity and ownership, although in the grand scheme of things, Etchells is fairly blasé about it: of all the purposes someone’s voice might be put to without their knowledge, “an avant-garde performance is probably the least of their worries.” [ ](https://exeuntmagazine.substack.com/p/frankie-thompson-horrible-things-essay-mental-health-compulsive-behaviours-pleasance-courtyard-soho-theatre) [ Frankie Thompson: How I manage my own ‘horrible things’ at the Edinburgh Fringe ](https://exeuntmagazine.substack.com/p/frankie-thompson-horrible-things-essay-mental-health-compulsive-behaviours-pleasance-courtyard-soho-theatre) Exeunt · Aug 25 [ Read full story ](https://exeuntmagazine.substack.com/p/frankie-thompson-horrible-things-essay-mental-health-compulsive-behaviours-pleasance-courtyard-soho-theatre) For the performers, though, lip-syncing to these strange, artificial voices is an odd task, requiring them to bend their live, human presence into the shapes produced by machines. Politically, it mirrors processes that are already at play in the continued computational automation of human life. Etchells brings up James Bridle’s writings on new technologies as a reference point: one example Bridle gives is of “chaotic storage”, a logistics technique employed by Amazon fulfilment centres whereby items are stored not according to traditional methods of categorisation or alphabetisation, but in a way that an algorithm determines to produce the most efficient routes for ‘picking’ based on customer purchase patterns. This appears completely random and incomprehensible to humans, with paddling pools sitting next to USB sticks sitting next to blowtorches, and so for the warehouse workers, the process of picking items becomes completely reliant on technology which tells them where to go. Our world is increasingly being designed not with humans in mind, but rather machines. As Etchells puts it, “technology malforms the space, and then you end up having to live in it.” Initially, Forced Entertainment tried their best to live in the world of machines: “I was in the it’s-got-to-be-perfect school of lip-sync,” says Etchells. But with their aesthetic being so tied to the failing act, the slipping mask, the shoddy costume, “it’s no surprise really that that didn’t last.” Instead, the performers got to enjoy being late for a line, or playing games with each other, “stealing” each other’s voices. Etchells compares it to the principles of ventriloquism, in which a free-floating voice unattached to a body is fundamentally discomforting and “sort of traumatic”. That discomfort is equally as alluring to Forced Entertainment as the satisfaction of precision, the pretence of authenticity only interesting if shown to be a pretence. Lip-sync has also opened up new avenues for the company. Having been allergic all their lives to Plays-with-a-capital-P, with Cold Sweat Forced Entertainment find themselves approaching something a little bit like drama. Rather than the presentational arena of Signal to Noise’s open white stage, Cold Sweat places us more decisively in a “fictional locale”: what appears to be “the aftermath of some disastrous party or backyard drinking binge” where three figures – family members, or neighbours, perhaps – are the last ones standing. “It’s all quite acrimonious and accusatory, everyone’s talking over each other.” For Etchells, this more fictional mode is “a door that we’ve never been able to open. We’ve just never really gone there.” Perhaps it is the technique of lip-syncing, an extra buffer of mediation, that allows them to venture away from the here-and-now without feeling that they have to commit to the “psychological claptrap” that comes along with acting; to be able to “play the game of theatre, without getting one’s hands too dirty.” As I wonder how else the impulses behind Forced Entertainment’s work have changed over time, it occurs to me that over the last ten years of new creations, with the exception of If All Else Fails, the company’s performers haven’t ever spoken on stage: there were two shows without any language at all, Out of Order and Under Bright Light, and then this trilogy of lip-sync works. Etchells agrees it’s a shift away from earlier productions, that were so often about “the actual voices of the performers and their actual presences. We had a lot of money, in some ways, on an authentic approach to what it might mean to speak on the stage.” But this sense of authentic presence itself had a fakeness to it; these days, Etchells can’t stand that mode of being onstage where performers “are here to be cheeky and witty versions of themselves. I don’t want to be charmed.” Pulling back into a more anonymous space has resulted in works that feel slightly sharper-edged, more brutal in a way. “All of these shows are post-Brexit, post-Trump, post-truth, post-everything,” Etchells notes. Speech, charisma, authenticity – these things feel politically loaded, and perhaps warmth and openness just don’t feel like the right tools to reflect the world we’re living in. “It feels like the space is closing down, and we’re trying to deal with the fact that the system, the structure that you’re in, is more oppressive and more powerful. It probably always was, but I think we’re just more tuned to it now.” Yet even without their voices, the performers’ distinctive presences – ones that many audiences have followed around for years, if not decades – still, inevitably, shine through as they physically navigate whatever unending task the system of the piece has set for them. They’re still trying to keep up with the onslaught of text, still running about, changing costumes, moving stuff around. The human is always stuck in the teeth of the machine, jamming the smooth, frictionless cheeriness of the not-real, gesticulating silently, trying desperately to communicate. Cold Sweat is at Sheffield Theatres, 2 to 3 October; Southbank Centre, London, 9 to 10 October; Lancaster Arts, 14 October [ ](https://exeuntmagazine.substack.com/p/exeunt-recommends-the-best-autumn-theatre-2026-lives-of-others-standard-of-living-our-friends-in-the-north-lanny-) [ Exeunt recommends... the best autumn theatre ](https://exeuntmagazine.substack.com/p/exeunt-recommends-the-best-autumn-theatre-2026-lives-of-others-standard-of-living-our-friends-in-the-north-lanny-) Exeunt · Sep 16 [ Read full story ](https://exeuntmagazine.substack.com/p/exeunt-recommends-the-best-autumn-theatre-2026-lives-of-others-standard-of-living-our-friends-in-the-north-lanny-) This piece was paid for by the Southbank Centre. Such support helps Exeunt to keep publishing the most interesting writing, about the most exciting theatre. Interested in partnering with Exeunt? Visit our Advertise with Exeunt page, where you can get more information, download an advertising pack, and find our contact details.
Steelers HC Mike McCarthy Addresses Talent Issue
Following a demoralizing blowout loss, Pittsburgh’s first-year coach blames coaching details rather than a lack of roster depth as a struggling offensive line prepares for a brutal divisional test.
This Week: Phone Bank for Transit, SF Politics, Transit Tales
Here is a list of events this week. Monday/today! Phone bank with SFBike to Save Transit. The San Francisco Bicycle Coalition is phone banking and connecting with voters, explaining how vital it is to pass the Regional Transit Measure this November. Join them to help make sure our regional transit survives and thrives. Monday/today, September 21, 5-7 p.m. San Francisco Bicycle Coalition Office, 1720 Market Street, S.F. Tuesday Historic Photo Exhibit Tour. Moving San Francisco is a collaboration between the SFMTA and San Francisco Arts Commission and is on view at City Hall through November 25. During this informal tour, they will take an in-depth look at selected photos from San Francisco transit history and learn more about the stories and people behind them. Tuesday, September 22, 5-7:45 p.m. North Light Court inside City Hall, One Dr. Carlton B. Goodlett Place, S.F. Tuesday San Francisco Bicycle Coalition Board Meeting. SF Bicycle Coalition members are invited to attend all board meetings. Tuesday, September 22, 6-8 p.m. Register for Zoom link. Tuesday SF Politics 101 with Joel Engardio. SF Politics 101 is a look at how local politics work and the history that shaped San Francisco—brought to life with visuals and narrative storytelling. Tuesday, September 22, 6-7:15 p.m. SPUR Urban Center, 654 Mission Street, S.F. Register to attend. Wednesday Transit Tales: A Storytelling Night. Join SPUR and Muni Diaries at Local Economy for an evening of true stories inspired by riding transit. From unexpected encounters and meet-cutes to funny mishaps and heartfelt moments, Transit Tales celebrates the experiences that make public transportation unforgettable. Wednesday, 5:30-7 p.m. Local Economy, 6028 College Ave, Oakland. Saturday Group Ride: Richmond BART to Point Pinole. Join Bike East Bay for a family-friendly, no-drop group ride to Point Pinole Regional Shoreline. Saturday, September 26, 10:30 a.m.-3 p.m. Starts at Richmond BART Plaza, 1600 Nevin Plaza, Richmond. Saturday Shipwreck Cove Opening. Come see Sunset Dunes’s newest playground. Saturday, September 26, 3 p.m., Sunset Dunes and Kirkham, S.F. Saturday 55 Wine Line Progressive. Ride between Horsies Market & Saloon, Bar Part Time and Ruby Wine on the 55 Dogpatch bus. Saturday, September 26. Three locations in Dogpatch. See SFMTA site for more details on locations and times. Got an event we should know about? Drop us a line.
'Cloud hangs over' Rose's underperforming Cherries
Bournemouth's 1-0 loss against Liverpool saw Marco Rose's side head into the international break failing to register a single win in their opening five league games of the season. Questions are now being raised about squad depth, tactics and how Rose's team are not able to capitalise on leads in games. The Cherries have made just two changes to their Premier League starting XIs under their new boss this season - the fewest of any side.
Why is trust in science important?
STAT's Alex Hogan sits down for an in-depth conversation with our new trust-in-science reporter, Nicholas Florko, on the latest episode of STATus Report.
Why is trust in science important?
STAT's Alex Hogan sits down for an in-depth conversation with our new trust-in-science reporter, Nicholas Florko, on the latest episode of STATus Report.
Colts’ WR Depth Chart Changes After Alec Pierce Injury
The Indianapolis Colts are going to have to dig deeper into their WR depth chart on Sunday. They lost Alec Pierce to a first-half injury, and they already were missing one wideout for Sunday Night Football against the Kansas City Chiefs. Pierce had one catch before exiting. He actually got hurt on a play in […] The post Colts’ WR Depth Chart Changes After Alec Pierce Injury appeared first on HEAVY.
China tests first practical submarine solar farm at 10 metres depth in open sea
Scientists successfully charge batteries and power a LED using lead halide perovskite solar cells in world-first test.
Predicting The Washington Wizards Depth Chart After Finalizing Their Roster
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Scientists still can’t agree how deep the deepest place on Earth is
Scientists mapped the deepest place on Earth, but the same sonar data produced depths that differed by 59 feet depending on how the data were processed.
'Why Did I Get Married Again?' Cast Reunites on Netflix
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Florida State’s lack of depth underscores poor offseason personnel decisions
The last two games have shown the Seminoles’ ongoing roster building flaws.
How Philadelphia can attack Tennessee’s biggest defensive weakness
Philadelphia can use motion, play-action and its receiving depth to challenge Tennessee’s rebuilt secondary Sunday
USC has a new explosive playmaker emerge vs Rutgers
USC's depth and talent at the running back position helped the Trojans move to 4-0 in 2026
Two BYU football starters ruled out against Colorado State
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Phoenix Suns Insider Provides More Insight on Duop Reath Signing
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The Big Holes in Wearable Heart Rate Variability And Readiness Scores
On September 9th, Apple announced it was revamping its Apple Watch Health Sensing System, rolling out a Readiness score (0 to 10), and increasing the frequency of heart rate variability (HRV) outputs 24-fold. This can be viewed as upping its competition with various other consumer wearable sensors. These “readiness scores” as a composite of multiple metrics, with heart rate variability (HRV) being front and center for most. The majority of Americans are now using wearable sensors, which equates to well over 100 million adults. HRV and Readiness scores are increasingly being marketed as a measurement of autonomic nervous system health, a digital marker for future disease, a clock for biological age, and a holistic metric to promote healthspan and even longevity. (Apple also introduced a new longevity tab and “Health Age”.) None of this has been proven. In this edition of Ground Truths I am going to review what we know about heart rate variability and readiness scores. Heart Rate Variability HRV is the variation in normal heart cycle timing. The variability of the heart rate, the barely perceptible millisecond changes in time between consecutive heart beats (see R-R intervals in the Figure below, left panel), is due to interplay between the sympathetic and parasympathetic (vagal nerve) inputs. Distinct from heart rate, individuals with the same heart rate can have very different HRVs. It is a rough reflection of the autonomic nervous system (ANS) activity, inadequate to say whether a person’s ANS function is abnormal. For more than three decades, heart rate variability (HRV) has been measured and several studies have found an association of low HRV and clinical outcomes, particularly a link with higher all-cause and cardiovascular mortality. There have also been less well established links of low HRV to risk of early cognitive impairment, dementia, mental illness, Type 2 diabetes and substance abuse. An important reminder is that HRV is a surrogate marker without any established cause-and-effect relationship. If you increase your HRV, that doesn’t mean it will improve health outcomes. In fact, there is no hard evidence for that. All that work linking to health outcomes was done with electrocardiogram (ECG) derived HRV. Now, in the era of consumer wearables, this is getting assessed differently, by optical pulse (yes, the lights you see) plethysmography (PPG) or what is called pulse rate variability (PRV). They are not the same, as shown below (right panel) and only concordant when the delay between the ECG and pulse is kept constant, which basically means at rest. I should mention there’s also what I will call MPV, a mattress mechanical movement sensor, a derived heart rate variability, that companies like Eight Sleep use, even further away from directly measuring HRV. HRV has not one uniform measurement but many different types of quantification, such as RMSSD, the magnitude of difference between successive R-R intervals of normal sinus beats (N-N) or SDNN, the standard deviation of NN intervals, both in milliseconds. SDNN is one of the so-called frequency domain HRVs (others are LF, HF, LF/HF). Different wearable sensors use different metics; Apple has relied on SDNN and nearly all of the others use RMSSD, which is generally considered the more accurate metric. There’s also the different length of time measured, such as for a matter of minutes, all day, or an overnight’s sleep. Short measurements are especially problematic since they don’t capture enough of respiratory modulation and other factors that influence HRV. Share Ground Truths How well does HRV correlate with PRV? There are very limited studies, especially independently done. One that is commonly cited was conducted by Air Force researchers in only 13 healthy adults assessing Oura ring 3 and 4, Whoop 4.0, and Garmin Fenix 6 and showed a correlation coefficient of 0.88 to 0.97 and a mean absolute percentage error from 6 to 10%. The correlation is not a perfect 1.0, but there’s at least a fairly high level of correlation. HRV is supposed to increase during the night due to takeover of the parasympathetic nervous system, and higher during deep sleep. A recent example of my 1 week, all day “HRV,” and one during sleep is shown below. As you can see, the N of 1 data are inconsistent for the same days from different sensors (Oura, AppleWatch, Fitbit Air, and Eight Sleep) by patterns, absolute numbers, and comparison with prior days and weeks. The largest study in over 8 million Fitbit users (the old version, not Google Fitbit Air, introduced in May 2026) gives you a sense of the effect of age, sex, and the 2 different main HRV (here PRV) metrics, with RMSSD on the left and SDRR (=SDNN) on the right below. That study, from data collected in 2018, is a major outlier, since all the more recent ones are tiny with respect to sample size. Many of the companies have not had independent evaluation of their HRV, such as Eight Sleep, but have published a low standard error on their website. There are some other published studies on the correlation between HRV and PRV, but they are all small and only in healthy adults. A scoping review emphasized the lack of study in underrepresented individuals, including the aged, people of color (which affects the PPG signal), and individuals who are underweight or obese. Add the typical adult age 60 plus with one or more chronic diseases. For example, one study in over 900 adults found poor correlation of HRV and PRV, non-uniformly underestimated across many chronic diseases (cardiovascular, endocrine, neurological, respiratory, and others), concluding PRV is “an invalid surrogate for HRV.” A recent systematic review of 43 studies comparing HRV and PRV found reasonable pooled absolute standardized error (HRV as gold standard) but only 10 of the studies provided quantitative synthesis in ideal conditions. Their main conclusion was similarly cautious: “PPG-derived HRV [PRV] should not be regarded as universally interchangeable with ECG-derived HRV across all devices, populations, and recording contexts.” Factors Affecting HRV and PRV That gets me to the long list of factors that affect HRV (and PRV) besides the device, the type of measurement (RMSSD, SDNN or others), the person’s signal, the sensor site, the duration of data capture, if weighting by sleep stage is used, how artifact is processed and corrected. And this list is not complete!: Oura puts out data from their community of users (who input data) on what affects their overnight HRV. The factors currently provided are: no alcohol (increase 8%), melatonin (increase 2%, float tank (increase 2%), wine (decrease 4%), and party (decrease 14%) in overnight HRV. Must be some big parties! Subscribe What is a PRV measurement good for? It has been falsely characterized as an index of “autonomic balance” and a specific indicator of stress. A 2018 review of the studies available for HRV and its relationship to stress, not using any of the current wearables, found that stress can lower HRV. But so can many other factors. The non-specificity of the signal, indexed to the table above, is striking. Evidence from a UK Biobank study of over 46,000 participants with actual HRV looked at genetically predicted HRV, a genetic risk score, that failed to show the expected HRV-mortality link, indicating that _HRV is likely not causa_l, but rather a reflection of person’s physiologic state. A review of consumer wearable HRV data from 5 longitudinal studies showed that nighttime PRV was not associated with perceived stress, and surprisingly higher HRV, in the largest cohort (N=717 participants), was correlated with higher stress. An Oura ring cohort of 525 first-year college students found a link between overnight PRV and perceived stress, but that was also seen with resting heart rate, sleep, and respiratory rate. Several very small studies have examined the relationship of HRV and athletic injuries or guiding training with mixed, and predominantly negative results. HRV biofeedback training with paced breathing had no significant effect on reducing stress or raising HRV, as demonstrated with sham controlled trials. When HRV for multiple days showed a decline in conjunction with body temperature, the Oura ring published data for prediction of Covid. The WHOOP company sponsored an observational study, published in 2026, of 30,000 users for 72 weeks, without a control group, that reported reduced alcohol intake (5.8 % points) by self-report. That doesn’t tell us much, and particularly about the merits of HRV for behavioral change. If you use the same device and conditions as longitudinal trends for multiple (at least 2-3) weeks that may be the one way to get something useful from the measurements. Data for overnight sleep with minimal motion and using RMSSD is the best proxy for real HRV. The reason to look at trends rather than any given night is that it more likely represents something, even though you won’t know with certainty what the “it” is. Keep in mind there are no data, no peer-reviewed evidence, to show that HRV fluctuation in-person has any correlation with health outcomes. Share Readiness Scores These are proprietary scores that integrate different metrics for each of the wearables: no algorithms have been disclosed. They are unvalidated against health outcomes. In a review of 14 composite health scores of readiness and recovery, HRV contributed 86% to the scores, followed by reading heart rate (79%), physical activity and sleep duration (both at 71%). That review noted the substantial variability in measurement protools and lack of standardization. Sleep staging is notoriously inconsistent and inaccurate by these sensors, which adds further to the HRV uncertainties for what the scores, which use sleep stage data, mean. Only resting heart rate has been shown consistently across devices to be extremely accurate. I’ve made a Table to summarize what we know about which metrics are included, the scores, any peer-reviewed studies that compared the readiness score with health outcomes, and the corresponding (if any, NA-not available) citation. You will note that some companies do not use the term “readiness," such as WHOOP for recovery, and Garmin, which has 2 different scores, one of which is Body Battery. Eight Sleep uses the term “Fitness Score.” They all include HRV; Apple includes a new metric they call “Recovery HRV” which among other components uses 7-days of sleep, but it is unclear what this means or how it is differentiated from other scores (there are clearly no data for outcomes). We have no knowledge of how the different components are weighted or whether any of these scores are better than resting heart rate, HRV alone, physical activity, or any other single metric. Since none of these are standardized, they are not interchangeable, so if you get a 90 for Oura that has no relationship to a 90 on a Google Fitbit Air. Notably, the company can update its algorithm for readiness score at any point without notification to device users. Without any useful evidence of actionability for these scores or established relationship with health outcomes, it is hard to make a case for their value. At the Apple recent announcement they showed their Readiness score (0-10) on the watch (Figure below) but there are no published data on this score, not even on their website. It’s available only on their new Watch Series 12 or Ultra 4 [of course, ;-)]. That exemplifies the problems with these scores, lack of data and evidence for being meaningful to promote health. Perhaps the best study (which isn’t saying much) is the WHOOP Recovery for golfer performance, because it did correlate with an objective outcome, even though there was no control group and the authors were all from the company. Among the 389 pro golfers, an absolute 10-per cent point increase in Recovery score was associated with about 0.5 fewer strokes per round. But that’s hardly a health outcome! WHOOP is also conducting a study in over 2,700 runners to see if their recovery score will be linked to less injuries and improved performance, but that is not yet published and has no control group or randomization. Putting This in Context For two decades I’ve been enthusiastic about the potential for digital health and particularly wearable biosensors. Over the years, we’ve seen some great progress for their ability to promote physical activity and accurately detect atrial fibrillation (the first FDA cleared deep learning AI for consumers). That work was the subject of rigorous research. But there are holes in the data and evidence for other metrics. One notable one is the “VO2 max” story that I wrote about earlier this year. At that time many subscribers asked me to cover heart rate variability, which I finally got to here. When I dived into the research and publication for HRV and readiness scores, I expected to find at least some that were of high quality and demonstrated their utility by linkage to health outcomes. To my surprise, I found none. The wearable sensor measurements for HRV (PRV) are, for the most part, accurate, but that validation work has only been done in small studies of healthy adults and does not take into account the long list of factors, from the device, software side, and the user side, that affect HRV measurements. Moreover, this metric chiefly relies on optical sensing and, as we have learned for heart rate PPG sensing, may be less accurate in people of color. Keep in mind that all of the health outcome association evidence comes from ECG-derived HRV; none are from wearable sensor data. I will repeat the key point: there's no peer-reviewed evidence to show that in-person HRV fluctuation—or efforts to raise your HRV— has any correlation with health outcomes. For those of you who look at your HRV on awakening, or even 2+ week trends of it being low, I hope this context helps to relieve any anxiety. Yes, low HRV (not PRV) has been shown to increase risk of some diseases as summarized above. But efforts to raise your HRV—a surrogate metric— has not been established for improving any health outcomes. HRV does not have any evidence of causality (the genetic evidence actually goes against this possibility). In this summary, I have not included data for other wearable sensors such as Polar, Samsung, Withings, Suunto, Amazfit, Coros, Ultrahuman, or additional mattress sensors. These are beyond my first-hand experience, and as far as I know from my in-depth review none have any peer-reviewed published data that differ from the 6 sensors I’ve reviewed here. From the points I’ve gone over above, we’re not ready for readiness scores. Besides being proprietary, they are predominantly based on metrics that have their own issues. It’s compounding the problem, like building a house without a solid foundation that has never undergone a rigorous inspection, and then selling it. Like I mentioned for PRV, you can look at trends over weeks rather than any single day, to get a handle, but even that may not be helpful. There’s simply no evidence that these scores meaningfully relate to health outcomes. I’d emphasize they might, but that requires doing prospective or randomized studies to prove it. None exist. There’s great promise for HRV/PRV utility_. For example**,**_ Prof Maiken Nedergaard, who discovered the brain glymphatics that are essential in eliminating metabolic waste products from the brain during sleep, has posited that HRV could be a non-invasive marker for neuromodulator oscillations, brain-body regulatory circuits, and brain clearance. That would be extremely useful, but like everything else on HRV and readiness scores it requires solid research and validation. The lay media isn’t helping much to get the story straight. Earlier this year The Economist published a piece entitled “The most useful indicator of your overall health” which ordained HRV as an “accumulated stress score.” That’s akin to the false assertion about VO2max: “V02 max is the singular most powerful marker for longevity.” As I’ve summarized here, that is not established. The fact is that so many things can lower HRV, including physical exercise (especially an intense workout), reduced sleep quality, stress, the list above, no less the device, signal, and software. Whatever fluctuations observed have not been correlated with any health outcome. Sadly, “datamaxxers” are widely using HRV and readiness scores that have never been validated to mean anything. We already know that for some people using the sensors for sleep metrics, it can induce “orthosomnia,” an obsession to get high sleep quality, with associated high levels of anxiety. In an experiment done by a company to promote sleep quality for its employees, “For those employees who did use the trackers, many reported feeling perfectly rested until their tracker told them they had had a terrible night. Others were told that they had slept like a baby when they had actually been lying awake worrying about the quality of their sleep. “ The same problem can result from preoccupation with HRV or readiness scores, with anxiety that would lead to further reduction in both. It you are using a wearable like >100 million American adults, it’s OK to look at these data, but contextualized with the major caveats reviewed here. If you are one to require evidence that HRV or readiness scores are linked to health outcomes, you may not even want to look. The companies make it hard to turn them off! Let me end with the companies that make and sell wearables. Apple’s doubling down on HRV (24-fold more reporting and heart rate very 5 seconds) and introduction of a Readiness score tells us that consumers have bought into these metrics and they are joining the club. However, all of this is occurring with a backdrop of tens millions of users, claims about the data that are not backed up by adequate evidence, marketing way out in front of whatever limited data exists, and not being transparent about their readiness score algorithms. The companies can well afford to do the research that is needed to connect these metrics with health outcomes show, once and for all, that increasing HRV or using readiness scores promotes our health. If they believed and invested in the products they are selling, we’d not be in this position of not knowing. That’s essentially where we are with HRV and readiness scores. Perhaps someday this will change and we’ll have good reason to embrace them. NB: I wrote this post. No AI. I have no conflicts of interest with any of its content. Loading... Ground Truths has 215,000 subscribers from every US state and 214 countries. There are over 300,000 followers of Ground Truths so more than 90,000 folks who can easily convert to be free subscribers. Your subscription to these free essays and podcasts makes my work in putting them together worthwhile. If you’re not a subscriber, please join! If you found this interesting PLEASE share it! Share Ground Truths The proceeds from all voluntary paid subscriptions go to support our summer internship program. It enabled us to accept and support a record number of 62 summer interns that joined us in 2026! These are high school, college and medical students selected from thousands of applicants. We couldn’t do this expanded program without the funds coming in through Ground Truths. Thank you!
iPhone 18 Pro Max still uses a Qualcomm modem in the US, teardown confirms
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Saints’ Kellen Moore Makes Telling Alvin Kamara Admission After Return
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Colton Gordon joins Brewers bullpen for the stretch run
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United Bank hires Phil Poliquin to lead government contracting business
Phil PoliquinUnited Bank, a subsidiary of United Bankshares, Inc. (NASDAQ: UBSI), has announced that Phil Poliquin has joined the Bank as senior vice president and managing director of Government Contracting (GovCon), leading the next phase of growth for United’s GovCon business across the Bank’s footprint.United has a longstanding history of serving government contractors and meeting the dynamic banking needs of companies supporting federal, state and commercial markets. Building on that foundation, the Bank is establishing a dedicated GovCon team led by Poliquin. The new team will bring together bankers from across United's footprint under a focused strategy designed to deepen industry expertise, strengthen client relationships and expand the Bank's presence in this important market.“Government contractors operate in a complex and highly specialized environment, and Phil understands that environment from multiple perspectives,” said United Bank Chief Commercial Lending Officer Mike Proctor in a press release. “His extensive commercial banking experience, combined with more than two decades of military and government service, brings tremendous depth and expertise to our team. We’re excited to have his leadership and insight as we continue strengthening how United serves our GovCon clients across the nation’s capital and beyond.”In his new role, Poliquin will lead United’s GovCon lending strategy and a team of specialists, with a focus on deepening client relationships and expanding the Bank’s presence in the government contracting and defense sectors. He will also serve as a subject matter expert across the organization, partnering with bankers across United’s footprint to support GovCon clients and opportunities.“Government contracting has long been an important part of the economy across the Washington region, and we believe it remains an attractive sector for growth,” said United Chief Executive Officer Richard M. Adams, Jr. in a press release “As the needs of these companies continue to evolve, investing in specialized leadership strengthens our ability to build on our established presence, expand how we serve this market, and pursue new opportunities.”Poliquin has a decade of experience in commercial banking, most recently serving as executive director of Aerospace, Defense, and Government Services (ADG) commercial banking at JPMorgan Chase. In this role, he led a team responsible for providing specialized financing and treasury advice to federal government contractor companies across the nation. Previously, he also held senior leadership positions at Bank of America.Prior to his banking career, Poliquin served 24 years in the U.S. Navy, retiring at the rank of Captain in 2013. A Naval aviator, he flew more than 100 combat missions in operations around the world and served in senior leadership positions, including as commanding officer of an F/A-18 Super Hornet squadron, leading more than 250 personnel during two combat deployments. He later joined the Intelligence Community as a program manager at the National Reconnaissance Office and contributed to the development of the Navy’s unmanned aircraft system strategy.“United has a strong foundation in government contracting, and I’m excited about the opportunity to build on that foundation by expanding our industry presence, deepening relationships, and developing a team with specialized expertise focused on serving government contractors,” said Poliquin in the release. “The goal is to be a trusted resource for growth-oriented companies that need a banking partner who understands what they do, where they’re headed and can help them navigate the opportunities and complexities of this market.”Poliquin holds a bachelor’s degree in mathematics from the University of Oklahoma, a master’s degree in national security strategy from the U.S. Naval War College, and an MBA from the University of North Carolina at Chapel Hill’s Kenan-Flagler Business School.
Texas Tech, Kentucky Injury Reports Shape Key Week 3 Matchup
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Kentucky Hits The Road Against Texas A&M
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Arizona Cardinals depth chart: 4 Week 2 observations
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DC Alex Grinch Impressed With UCF’s Defensive Depth
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Early look at Tennessee’s defensive depth chart against the Eagles
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Plan to bring more maternal health care to Alabama
IN-DEPTH WITH SARAH WALL: Health officials say one in three counties in Alabama is considered a maternal health desert. That means there are no health services in the counties for pregnant women or new moms. But, a plan is underway to change that. We’re talking to the folks at the March of Dimes about their Mom and Baby Mobile Health Units - why they are so important, how they work and how you may be able to use them. For more information on the Mom and Baby Mobile Health Units, you can go to the March of Dimes website: www.marchofdimes.org/our-work/mobile-health-centers. If you would like to sign up for an appointment with the mobile health unit, you can click here: https://www.healthservicesinc.org/. And, for more information on UAB’s mobile unit that works in other areas of Alabama, you can go to: https://www.uab.edu/nursing/home/partnerships/clinical/moms-and-kids-mobile-health-unit.
Exploring the ocean depths: FIU scientists descend to world’s deepest hydrothermal vents
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Phoenix Suns Signing Free Agent Center as Mark Williams Insurance
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Kings' Roster Stocked With PG Depth Following Recent Signings
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Packers sign 320-pound defensive tackle to the practice squad
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Vikings place RB Jordan Mason on IR with fractured thumb
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How Dansby Swanson’s Return Can Boost the Cubs Playoff Push
Dansby Swanson's return is near, and the Chicago Cubs need it desperately. Since Swanson went down, the depth has been tested, and the National League postseason picture has become a tight race. He has missed roughly five weeks with an oblique injury. Now, while Iowa is dealing with unfortunate weather, he is expected to make …
Eagles Make Head-Scratching Decision Behind Saquon Barkley
All offseason long, the Philadelphia Eagles have generated a ton of hype for their second-string running back, Tank Bigsby. Although Saquon Barkley is the clear-cut No. 1 back on the depth chart, the expectation was that Bigsby would get some more work this season, which would help Barkley save some miles. After seeing Week 1 […] The post Eagles Make Head-Scratching Decision Behind Saquon Barkley appeared first on HEAVY.
Dartmouth Health announces staff reductions
Dartmouth Health (DH) notified 124 employees today that their positions have been eliminated in addition to the cancellation of 303 open positions from Dartmouth Hitchcock Medical Center and Dartmouth Hitchcock Clinics Southern Region.
Can Bournemouth Have Their Europe Cake and Eat It?
Historic European nights beckon for the Cherries, but cautionary tales of domestic collapse loom. Dive into the squad depth dilemma facing Marco Rose as he balances continental glory.
Jazz’s Defensive Overhaul Should Save Brice Sensabaugh, Not Bench Him
Utah’s newfound defensive depth provides the perfect safety net for Brice Sensabaugh. Instead of benching the sophomore scorer, Will Hardy can finally unleash his elite bucket-getting potential.
This bizarre creature walks upside down—scientists stunned by ocean discovery - Futura-Sciences
The Alien of the Abyss In the dark depths of the Pacific, a truly otherworldly fish has been filmed moving in a way never seen before. Those “legs” are actually fin rays, and its way of walking shatters everything we thought we knew about fish locomotion. Imagine a body covered...
Orlando Magic Missed Out on Potential Winning Move
While the front office prioritized roster continuity, passing on versatile veteran Bruce Brown Jr. leaves a critical void in perimeter shooting and defensive depth for Sean Sweeney.
Mastercard’s Dreamonomics Report Finds Small Business Owners Are Redefining Growth for a More Demanding Economy: 68% Prioritize Stability Over Speed, 89% Want More Digital Tools and 71% Say Cyber Protection Is a Priority
To support the needs of small businesses, Mastercard Collection for Business launches today bringing together business-focused benefits, protections and experiences Small businesses are looking ahead with ambition — but they are also preparing for the pressure that comes when opportunity arrives. Mastercard today introduced Dreamonomics, a new global view of the forces reshaping small and medium-sized enterprises (SMEs) perceptions and approach to growth. The research shows that SMEs are redefining growth as controlled momentum: 68% prioritize stability and predictability over fast growth, 54% actively avoid unnecessary financial risk and 61% are focused on deepening customer relationships rather than reaching as many customers as possible. Studio Mouvoir Headline Findings from the new Dreamonomics Report Stability is overtaking speed: 68% of SMEs now prioritize stability and predictability over fast growth, while 54% say they actively avoid unnecessary financial risk. Customer depth
Evaluating DeVonta Smith as WR1
Though he has been a number one receiver before in his career, this past Sunday was DeVonta Smith's debut as the top receiver on the depth chart in the
Marcus Freeman Pleased With The Development Of Notre Dame Underclassman
Freshman standout Jonaz Walton and a wave of emerging underclassmen are seizing their opportunities, blending elite speed with refined technique to bolster the Irish depth chart.
How Jackson State football used off week before facing Tuskegee
Jackson State football used the off week to further develop its depth before playing Tuskegee on Sept. 19.
Eagles Shake Up Depth Chart With QB Decision
The Philadelphia Eagles shook up their depth chart with QB decision before Sunday's opener. The post Eagles Shake Up Depth Chart With QB Decision appeared first on HEAVY.
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Buffalo Bills Inactives Against Houston Texans Include Promising Rookies
Buffalo sidelines rookie receiver Skyler Bell while elevating Frank Gore Jr., reshuffling the depth chart as key injuries impact the roster for Sunday’s clash in Houston.
Is Nathan Church the Cardinals’ starting center fielder in 2027?
As Leo Bernal continues to impress and grab a 2027 starting gig, the St. Louis Cardinals are seeing Nathan Church attempt to do the same. While center field did not have the same depth as catcher, Church is looking to take hold of the spot and give the Cardinals some clarity at a position of […]
Key Takeaways From Notre Dame's Offense Against The Rice Owls
CJ Carr’s aerial clinic sparked a dominant shutout victory, showcasing elite receiver depth while exposing unexpected rushing struggles that Marcus Freeman must address before tougher matchups.
Jaguars Add New QB for Week 1 vs. Browns
The Jacksonville Jaguars‘ roster on Sunday will include a quarterback who wasn’t on the active roster a few days ago. He’s a familiar face, though, as the Jags make sense of their depth chart behind Trevor Lawrence. The move was announced Saturday: QB Nick Mullens will be on the gameday roster. It’s the first of […] The post Jaguars Add New QB for Week 1 vs. Browns appeared first on HEAVY.
Should The Miami Heat Pursue Darius Garland?
Following the blockbuster addition of Giannis Antetokounmpo, Miami could target Darius Garland to fix backcourt depth issues and solidify a championship-caliber big three.
Arkansas Department of Health plans to cut 38 jobs, eliminate additional 33 empty positions
The Arkansas Department of Health plans to eliminate 71 positions, including 38 that are currently filled, effective Nov. 1, a department spokesperson said Friday.
Maple Leafs sign free agent Nick Blankenburg.
Maple Leafs add some depth to their blue line.
Roma Set for Squad Rotation Ahead of Brutal Fixture Run
With Inter, Como and Real Madrid looming, Gasperini could turn to Roma’s newfound depth against Torino.
Nets Labeled as ‘Noncompetitive Without Own Pick’ in 2025-26
With Houston controlling their draft fate, Brooklyn pivots toward a veteran-led push for the Play-In, betting on Julius Randle and new depth to defy low expectations.
76ers Center Adem Bona Showcases Why He Deserves More Respect
While Philadelphia searches for center depth, Adem Bona wants people to remember he is the backup.