On the day Chey Tae-won said 'Jensen was the one who felt slighted,' the HBM4–SOCAMM–LPDDR roadmap dropped in one keynote
The Week Memory's Pricing Power Pointed Upstream
The story of this week is not the KOSPI breaking 7500 and tripping a Monday circuit breaker — that was an aftershock from a US semi profit-take. The structural event was quieter and one floor up the supply chain: NVIDIA publicly asked Korean memory for more, and Korean memory answered with the word "co-development" rather than "supply." Pricing power moved one notch upstream — from the accelerator to the DRAM stack — and it was not subtle.
Two lines tell you it actually happened. First, SK Group Chairman Chey Tae-won — discussing his meeting with Jensen Huang — said publicly that "Jensen was the one who felt slighted." That sentence was unsayable two years ago. Second, what SK Hynix and NVIDIA announced on June 8 was not another HBM tonnage MoU; it was a joint development pact for next-generation memory inside NVIDIA's AI Factory platform, extending past HBM4/HBM4E into the spec-setting phase of NVIDIA's Vera Rubin generation.
Samsung Reached the Same Place Via a Different Door
In the same week, Samsung Electronics (005930) proved two things. It held the global DRAM crown at 38.6% share in Q1 and was the only one of the top-three memory houses to gain share (both SK Hynix and Micron slipped). More importantly, DS chief Jun Young-hyun, immediately after meeting Jensen, confirmed Samsung will ship HBM4 and SOCAMM modules this year, with HBM4E and SOCAMM2 cooperation extended. SOCAMM is not a vanilla DRAM module — it is a new server form factor NVIDIA is defining. Samsung is no longer the vendor filling an empty slot; it is in the room when the slot is being drawn.
Layer in Jensen's public comment that "LPDDR is the next hot memory class after HBM" and Korea now sits inside the design phase of four NVIDIA categories at once — HBM4, SOCAMM, LPDDR, and cHBM. The standard-SKU era is ending. The new state: NVIDIA's platform spec sheet is the Korean memory roadmap.
What the Picks-and-Shovels Layer Confirms
The back-end equipment names ratified the cycle's width. Hanmi Semiconductor (042700) booked a KRW 44.2B order from SK Hynix for the new TC Bonder 4.5 Griffin into the Cheongju HBM4 line. Techwing (089030) said its HBM4 test handlers will ship to all three memory majors — Samsung, SK Hynix, and Micron — simultaneously. Three-way back-end capacity additions, not one — that is the texture of a multi-year cycle, not a quarterly bounce.
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