Direct:
SK hynix (000660.KS) is compressing a multi-year construction schedule against a backdrop of effectively sold-out capacity. The first cleanroom at its Yongin Semiconductor Cluster has been pulled forward roughly three months, from May 2027 to February 2027. The company committed about KRW 21.6 trillion (~$15 billion) to that first fab on top of earlier spending, bringing cumulative investment in the first Yongin fab to roughly KRW 31 trillion. The full cluster is designed for around 350,000 wafer starts per month, with the first fab positioned around the 1c DRAM node.
Yongin matters for 2027 and beyond. The nearer-term capacity is M15X in Cheongju, which opened in October 2025 ahead of schedule and started commercial 1b DRAM production in February 2026. A second cleanroom is due by the end of this year, with full operation around mid-2027 at roughly 50,000 DRAM wafers per month. That line feeds HBM3E now and HBM4 once it ramps in early 2027. Equipment move-in ran about two months early. None of this is normal pacing for memory fabs, where capacity is usually staged deliberately to protect pricing.
The reason for the urgency is on the demand side. SK hynix has told customers available capacity is essentially zero, with nothing left to carve out for a specific buyer. Major cloud and Big Tech customers have reportedly approached the company with offers to directly fund dedicated production lines and even cover ASML (ASML) EUV scanners at hundreds of millions of dollars each, with one proposal aimed at the first phase of the Yongin DRAM fab. SK hynix has said it is reviewing structural alternatives that differ from conventional long-term supply agreements. It has not accepted any of the offers.
For anyone buying DRAM or SSDs, the timeline is the point. Even with everything pulled forward, meaningful Yongin volume does not arrive until 2027, and M15X output is largely committed to HBM. SK hynix's first-quarter DRAM average selling price rose more than 60% quarter on quarter and NAND more than 70%. Capacity is being added as fast as it physically can be and it still lands behind demand. Pricing has no relief coming from this for at least another year.
Drafted with AI assistance against parallel reporting.
Sources:
- DigiTimes, “SK Hynix speeds Yongin fab buildout as memory crunch fuels capacity race” (May 18, 2026, paywalled stub: headline and lead only)
- The Korea Herald, “SK hynix to invest W21.6tr in Yongin fab completion” (Feb 25, 2026)
- Seoul Economic Daily, “SK Hynix Adds $15B to Yongin Fab, Accelerates Cleanroom Launch” (Feb 25, 2026) and “Big Tech Offers to Fund SK hynix Fabs, Equipment Amid Memory Shortage” (May 8, 2026)
- TrendForce, “SK Hynix Commits Additional USD 15 Billion, Escalating Fab Expansion Race among Memory Giants” (Mar 5, 2026)
- Tom's Hardware, “Desperate SK hynix customers offer to buy its EUV machines and fund new fabs as memory capacity hits zero” (May 2026)
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