SK Hynix 54 Trillion Won CapEx Commit + Nvidia Rubin Ultra HBM Spec Cut Signal Dual-Sided HBM4E Supply Crunch
SK Hynix has formally announced a 54 trillion won (~$39B USD) capital investment in two new fabs — Yongin Y2 and Cheongju M17 — explicitly targeting mid-to-long-term AI memory production capacity, representing one of the largest single-cycle HBM capacity commitments on record. Concurrently, a report from The Information (cited in Korean press) indicates Nvidia is evaluating reducing Rubin Ultra's memory configuration from the originally announced 1TB to as low as 192–256GB — a 75–81% spec reduction — driven by concerns that HBM4E suppliers, led by SK Hynix, cannot meet sufficient volume for the platform's planned late-2027 launch window.
The SK Hynix CapEx announcement is a structural supply-side signal confirming that the HBM4/HBM4E bottleneck is real and severe enough to justify multi-decade fab commitments — but new fab capacity takes 2–3 years to reach volume output, offering no near-term relief. The Rubin Ultra spec reduction, if confirmed, would compress per-unit HBM content and reduce BOM cost for that SKU, but signals that HBM4E supply scarcity will gate Nvidia's highest-performance roadmap products well into 2027–2028, preserving SK Hynix's pricing power in the interim.
Sources
- SK Hynix Newsroom — SK hynix Invests 54 Trillion Won in Yongin Y2 and Cheongju M17 to Secure Mid-to-Long-Term Production Base for AI Memory Demand
- SK Hynix Newsroom — SK hynix Invests 54 Trillion Won in Yongin Y2 and Cheongju M17 to Secure Mid-to-Long-Term Production Base for AI Memory Demand
- SK Hynix Newsroom — SK hynix Invests 54 Trillion Won in Yongin Y2 and Cheongju M17 to Secure Mid-to-Long-Term Production Base for AI Memory Demand
- Foeconomy — 엔비디아, '루빈 울트라' HBM 최대 81% 축소 검토
- Bloter — [반도체 팹사이씬] 삼성, 잘 나가는 '메모리'서도 이탈 러시
- Mexc — SK hynix Stock Analysis: HBM3E, HBM4, AI Servers and Memory Opportunities
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