Silicon Analysts

Silicon Analysts Weekly · Issue #18 · week of 2026-10-05 → 2026-10-12

Silicon Analysts Weekly #18 — 2026-10-12 (corrected)

Corrected after publication

Original subject (corrected): HBM3E price −90.5% WoW; SK Hynix HBM4 bit share jumps to ~70%

  • HBM Price per GB by Generation — HBM3E (headlined in issue #18) — was $1.55/GB (H2 2025) → now $16.4/GB (2025); the H2 2025 point is removed (Not a 90.5% fall: a July 2026 per-gigabit asking price ($1.5-1.6/Gb, about $12.4/GB) was stored as $/GB and filed under H2 2025.)
  • Samsung × NVIDIA Vera Rubin (HBM3E 12-Hi) (headlined in issue #18) — was Volume shipping @ 2026-01-01 → now withdrawn (The cited article (Sisa Journal-e, 2026-01-08) reports that Samsung had begun supplying 12-high HBM3E without naming a customer, and that approval of its HBM4 for NVIDIA was still pending; it names no NVIDIA platform. NVIDIA Vera Rubin uses HBM4, not HBM3E.)

Full correction log

Silicon Analysts Weekly for the week of 2026-10-05 to 2026-10-12: Silicon Analysts Weekly #18 — 2026-10-12 (corrected). A sourced, provenance-marked briefing on AI-chip supply-chain and pricing movements — HBM pricing, wafer pricing, foundry and CoWoS capacity, per-chip bill-of-materials cost, and HBM qualification status — derived from public data. Part of the Silicon Analysts semiconductor data layer.

The take

The −90.5% WoW read on HBM3E spot pricing is the loudest signal this week — treat it as a spot-market air pocket, not a structural collapse, because the supply picture is tightening: SK Hynix's 2026 HBM4 bit share revised up to ~70% (from 54%) while Samsung is flagging HBM4 at $4+/Gb by 2027. Readers tracking GPU costs should note that CoWoS capacity estimates for 2027 now diverge materially (141k–170k wafers/month), making allocation visibility the harder problem than DRAM pricing.

What moved this week

Samsung × NVIDIA Vera Rubin (HBM3E 12-Hi) — now Volume shipping (source)
NVIDIA CoWoS-L customer allocation — now 2026 510,000–700,000 wafers (estimates diverge; ~605,000 midpoint) (was 2026-Q4 ~60% of TSMC CoWoS allocation; ~515,000 wafers (510,000 CoWoS-L) at TSMC annually) (source)
TSMC N3 ramp — now 180,000 wafers per month by Q4 2026 (was ~150k–180k+ wafers/month currently, with targets of 180k–210k wafers/month by 2026–2027) (source)
TSMC CoWoS capacity — now ~141,000–170,000 wafers per month in 2027, with readings diverging materially (was ~70,000 wafers/month (2025 current); targeting ~120,000–130,000 wafers/month by end-2026) (source)
TSMC SoIC 6µm pitch ramp — null mass production commenced 2025 at 6µm bond pitch (source)
SK Hynix HBM4 HBM bit share — ▲ now 2026 ~70% (was 2026 54%) (source)
SK Hynix HBM bit share — ▼ now 2026-Q2 50% (was ~60%) (source)
HBM Price per GB by Generation — HBM3E — −90.5% WoW · full history
RUNPOD H200 on-demand $/GPU-hr — −21.8% WoW · full history
GPU AI gross margin — −11.5pp WoW · full history
TSMC 28 annual wafer starts — −7.7% WoW · full history
MAINSTREAM CPU gross margin — +3.0pp WoW · full history
DDR5 16GB SPOT spot $/unit — +0.9% WoW · full history

Supply-chain & pricing signals

Silicon photonics market reaches $40B in 2026; co-packaged optics to exceed 50% of optical chips — LightCounting data shows optical transceiver market at ~$40B (2026) with silicon-photonics transceivers reaching >50% market share for first time. Co-packaged optics (CPO) adoption by Nvidia ecosystem and major cloud operators signals data-movement efficiency becoming parity-cost with compute in AI infrastructure; optical chip market forecast to grow 4x ($4B→$15B by 2031). (PR Newswire) · _In our data:_ NVIDIA — 2 developments tracked this quarter · Market Intelligence
Samsung HBM4 prices to more than double in 2027, reaching $4+/Gb — Severe pricing pressure on HBM4 supplies will constrain AI accelerator costs and OEM margins through 2027. Samsung's push for 3x HBM3E pricing ($4+/Gb vs $1.50/Gb) while ramping HBM4 to 80% of HBM revenue signals structural undersupply lasting beyond 2027, directly impacting data center capex efficiency. (Korea Herald) · _In our data:_ Samsung — 3 developments tracked this quarter · Market Intelligence · HBM price by generation · HBM market share by vendor
AMD demand outrunning supply through 2027; CEO signals sustained capacity expansion — Lisa Su's confirmation of structural demand-supply imbalance and $10B+ Taiwan commitment (TSMC, ASE, SPIL) signals AMD confidence in multi-year GPU/accelerator demand. Supports TSMC capacity expansion trajectory but underscores foundry bottleneck persisting into 2027. (The Next Web) · _In our data:_ Market Intelligence

This week's analysis

The Efficiency Tax: How CHIPS Act Subsidy Allocation, Geopolitical Risk, and Competing Fab Strategies Are Reshaping the US Domestic Semiconductor Supply Chain — US domestic semiconductor manufacturing is growing fast, but the cost gap versus Asian fabs remains substantial. This analysis examines how CHIPS Act subsidy allocation, the US-Taiwan $500B deal, Intel's 14A foundry play, Micron's US fab strategy, and Korea fab subsidy competition are reshaping supply chain logic for procurement and strategy teams through 2030.
The Invisible Attack Surface: How AI Agents Are Reshaping IP Theft Vectors Across the Semiconductor Supply Chain — AI agents deployed across EDA workflows, supply chain orchestration, and design environments are opening novel IP exfiltration vectors that traditional security frameworks were never built to address. This analysis maps the threat landscape for semiconductor professionals and procurement teams.

AI engines are citing

SK Hynix GDDR Memory Distributors: How the Channel Actually Works
AMD vs NVIDIA: The AI GPU War in Numbers
Analysis

Tool spotlight

HBM Market Analysis — Spot prices, supplier share, qualification status, and forecasts.

Sources this week

PR Newswire
Korea Herald
The Next Web
sisajournal-e.com
astutegroup.com
tweaktown.com
eu.36kr.com
insights.trendforce.com
ersaelectronics.com
sammyfans.com

Citation & licensing. Figures from this issue are free to cite — in articles, research, internal decks, and AI-generated answers — with attribution to Silicon Analysts and a link to this page. Commercial redistribution and derived data products require a license. See the Citation & Data License.

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Sourced public intelligence, not insider data. Qualification status changes publish automatically once corroborated, not after human review. Full timelines on the HBM Qualification Tracker.