Silicon Analysts Weekly · Issue #3 · week of 2026-06-15 → 2026-06-22
Silicon Analysts Weekly: HBM4 qualifies across all three vendors, CoWoS expands
Silicon Analysts Weekly for the week of 2026-06-15 to 2026-06-22: Silicon Analysts Weekly: HBM4 qualifies across all three vendors, CoWoS expands. A sourced, provenance-marked briefing on AI-chip supply-chain and pricing movements — HBM spot prices, wafer pricing, foundry and CoWoS capacity, per-chip bill-of-materials cost, and HBM qualification status — derived from public data and human-reviewed. Part of the Silicon Analysts semiconductor data layer.
The take
CoWoS capacity is tracking toward 120,000–130,000 wafers/month by Q4 2026, roughly doubling from end-2025 levels — yet packaging, not wafer supply, remains the binding constraint on AI accelerator output. Simultaneously, all three memory vendors are now HBM4-qualified for Vera Rubin, but SK Hynix's 60% market share means allocation leverage stays concentrated. Bernstein's note that HBM prices would need to triple to match conventional DRAM margins is the structural tension readers are watching.
What moved this week
TSMC CoWoS CoWoS capacity — up — Q4 2026 ~120,000–130,000 wafers/month (midpoint ~127,000) vs ~65,000–80,000 wafers/month (end-2025 range; SemiVision estimates ~65k, TrendForce reports 75k–80k current capacity) (source)
AMD CoWoS customer allocation — up — Q3 2026 ~100K wafers (~11% of CoWoS allocation) (source)
Broadcom CoWoS customer allocation — up — Q3 2026 120K–130K wafers (~15% of CoWoS allocation) vs ~13–15% of total CoWoS demand (~150,000 wafers annually) (source)
NVIDIA CoWoS customer allocation — up — Q3 2026 710K–750K wafers (absolute); ~60% of CoWoS allocation (share) vs 2026-2027 800,000 to 850,000 wafers (source)
TSMC CoWoS CoWoS-L CoWoS capacity — up — 105k wafers per month by end-2026, rising to 141k wafers per month in 2027 (per JPMorgan) (source)
TSMC CoWoS CoWoS CoWoS capacity — up — 90,000–125,000 wafers/month by end of 2026 (central estimate ~110,000–115,000 WPM) vs null ~127,000 wafers/month (source)
Supply-chain & pricing signals
CPO/silicon photonics component demand accelerates; automated inspection solution launched — Gen Precision's GTK-OSI1 inspection machine addresses manufacturing bottlenecks in Fiber Array Units and passive optical components critical for co-packaged optics (CPO) AI infrastructure. Deployment supports scaling of high-speed interconnect solutions required for next-gen AI data centers. (The Manila Times)
SK Hynix dominates HBM market with 60% share, creating critical AI chip bottleneck — SK Hynix's overwhelming 60% HBM market share has created a severe supply constraint forcing hyperscalers (Amazon, Microsoft, Google, Meta) to face pricing pressure and capacity allocation challenges. This bottleneck is undermining AI infrastructure scaling and forcing secondary players like Apple to absorb price increases. (CNBC)
SK Hynix overtakes Samsung as Korea's most valuable company amid AI boom — SK Hynix's market cap surge to $1.35 trillion (340% YTD gain) reflects its monopolistic position in HBM supply to Nvidia, Google, and other AI leaders. This valuation shift signals sustained pricing power and supply scarcity premium in high-end memory markets through 2027. (Reuters)
Apple partners with Intel for US chip design and manufacturing — Major Apple-Intel partnership diversifies high-volume chip production away from TSMC and provides Intel critical revenue to compete with Taiwan, though timing coincides with Apple's efforts to reduce TSMC dependency amid AI chip demand surge. This shifts foundry capacity allocation and validates Intel's US government-subsidized turnaround strategy. (The Manila Times)
RAM shortage forces Nothing to cancel CMF phone launch; memory now most expensive component — Severe DRAM pricing crisis (doubling twice for Apple's Phone 4A since design phase) forces OEM product cancellations and price hikes, signaling structural memory supply tightness that undermines consumer electronics demand and threatens margin compression across entire smartphone industry. Tim Cook's warning indicates Apple-scale OEMs at breaking point. (The Verge)
HBM prices must triple to match conventional DRAM margin economics — Bernstein analysis reveals HBM economics are structurally challenged: conventional DRAM yields 2x revenue per wafer capacity with higher margins. A 3x HBM price increase would be needed for parity, suggesting current HBM pricing power is unsustainable and may face compression as capacity scales. (WSJ)
Supply-chain & pricing signals
SK Hynix holds ~60% HBM market share, constraining hyperscaler allocation — concentration at one supplier is creating capacity allocation pressure for major AI infrastructure buyers. (Source)
SK Hynix market cap reaches $1.35 trillion, overtaking Samsung as Korea's most valuable company — 340% YTD gain reflects sustained pricing power and scarcity premium in high-end memory. (Source)
Bernstein: HBM prices would need to triple to match conventional DRAM margin economics — analysis flags structural tension between HBM capacity conversion costs and revenue-per-wafer versus standard DRAM. (Source)
DRAM shortage forces OEM product cancellations — Nothing cancelled a CMF phone launch citing RAM prices; memory cited as the most expensive component in current designs. (Source)
CPO/silicon photonics inspection tooling launched to address FAU manufacturing bottlenecks — Gen Precision's GTK-OSI1 targets fiber array unit yield constraints in co-packaged optics supply chains. (Source)
HBM watch
SK Hynix × NVIDIA H200 (HBM3E): Volume shipping — SK Hynix achieved first volume production of HBM3E for H200 and B200 accelerators. (source · timeline)
SK Hynix × NVIDIA Vera Rubin (HBM4): Qualified → Volume shipping — SK Hynix is now at scale on HBM4 for Vera Rubin, consistent with its fastest-qualification track record across generations. (source · timeline)
Samsung × NVIDIA Vera Rubin (HBM4): Qualified → Volume shipping — NVIDIA CEO confirmed June 5, 2026 that Samsung passed HBM4 certification for Vera Rubin and has moved to volume supply. (source · timeline)
Micron × NVIDIA Vera Rubin (HBM4): Qualified — NVIDIA CEO confirmed Micron passed HBM4 certification for Vera Rubin; 2026 HBM volumes reported as fully booked. (source · timeline)
Samsung × AMD MI400 (HBM4): Qualified — AMD's MI400 is committed primarily to Samsung HBM4, the first major AI socket Samsung has fully won this cycle. (source · timeline)
Samsung × AMD MI455X (HBM4): In qualification — Samsung and AMD signed an MOU aligning Samsung as primary HBM4 supplier for the MI455X GPU. (source · timeline)
Samsung × AMD MI350 (HBM3E 12-Hi): Qualified → Volume shipping — Samsung 12-Hi HBM3E confirmed in MI350X floorplan analysis; AMD officially confirmed Samsung and Micron supply at AI Advancing 2025. (source · timeline)
This week's analysis
Why CoWoS Lead Times — Not Wafer Capacity — Are the Real AI Bottleneck — TSMC is nearly doubling CoWoS capacity in 2026, yet lines stay booked at 52–78 week lead times. Why the booking window, not raw capacity, is the binding constraint on AI hardware.
Foundry Allocation Status 2026: Where Capacity Is and Isn't — Mid-2026 foundry allocation map: TSMC CoWoS fully booked with ~1M wafers of 2026 demand, NVIDIA ~60% locked, 2nm booked through 2028, HBM allocated. Live tracker + API.
AI engines are citing
Tool spotlight
Chip Cost Calculator — Model wafer, yield, packaging & HBM cost for any AI accelerator.
Sources this week
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Sourced public intelligence, not insider data; status changes are human-reviewed before publication. Full timelines on the HBM Qualification Tracker.