Chinese memory maker ChangXin Memory Technologies (CXMT) announced at an industry conference in Shanghai that it has achieved a breakthrough in 4F² memory architecture and plans to launch new products for data-center servers by the end of the year. Global memory and chip stocks fell on the news.
Key points:
- Technology: CXMT says the new architecture uses vertical gate-all-around stacked transistors to fit the same number of memory cells into a smaller area, raising memory density. 4F² is a goal that Samsung, SK Hynix and other makers have pursued for years.
- Market reaction: On October 13, Samsung Electronics closed down 7.4%, SK Hynix fell about 10% and South Korea’s KOSPI ended down about 5.5%. Micron fell 4% overnight, and memory stocks such as Sandisk, Seagate and Western Digital also weakened. Demand from AI data centers for high-performance memory is making memory a new battleground in AI competition.
- A sober view: The claim has not been independently verified, and CXMT has not disclosed more technical details. Analysts caution that there is still considerable distance between a debut and production-ready yields; if confirmed, it would also mean a Chinese memory maker was first to clear this threshold despite sanctions and a lack of access to top-tier equipment.
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