CXMT expects to sell a memory cell that Samsung and SK hynix have only shown in research papers so far.
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works .
Cao spoke about the new RDIMM at the Integrated Chips and Chiplets Conference on Saturday. A 4F² cell is 2F by 2F at about two-thirds the area of current 6F² cells at the same feature size, and designs so far all stand the transistor up. The company has produced research and patent filings on the technology with papers in 2021, 2023, and 2025, and an 8Gb full-array research example was demonstrated at IEDM 2023.
Cao said CXMT’s version, the Vertical Surrounded Gate (VSG) transistor, has a channel that stands vertically with the gate wrapped around it, allowing stronger gate control with less leakage. Most importantly, standing the transistor up shrinks the cell. CXMT now has more than 300 published patent families tied to 4F², he added. The report says the industry as a whole is moving toward 4F² with 3D solutions that decouple DRAM and CMOS processes, combining them with wafer-level hybrid bonding , which allows logic and cell density to be optimized independently. Cao also covered CXMT’s own hybrid-bonding work, which began in 2019, with published patents.
Aside from this announcement, China’s primary DRAM maker has been in the news lately for its manufacturing and market-share gains. Its fifth-generation G5 DRAM technology platform , announced Sept. 20, is in mass production. TrendForce puts CXMT’s share of global DRAM revenue at 9.5% in the second quarter, up from 7.6% in the first, good for fourth place. Last November, CXMT showed off DDR5-8000 and LPDDR5X-10667 . It has revealed itself as a manufacturer to be taken seriously by the biggest existing players.
China's memory-making champion smashes DDR5-8800 barrier on AMD platform
Key considerations
- Investor positioning can change fast
- Volatility remains possible near catalysts
- Macro rates and liquidity can dominate flows
Reference reading
- https://www.tomshardware.com/pc-components/dram/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/dram/cxmt-president-says-companys-first-4f2-dram-will-be-a-server-ddr5-rdimm-due-by-year-end-vertical-transistors-cut-each-memory-cells-footprint-by-a-third-on-paper-but-no-speeds-or-capacities-yet#main
- https://www.tomshardware.com/membership
- From Scan to Treatment Plan, AI Helps Close Breast Cancer’s Deadliest Gaps
- GTA 6 could come to PC as early as Q1 2027, leak claims
- NVIDIA Opens Applications for 2027–2028 Graduate Fellowships With Awards Up to $60,000
- Two Steam games generated $560,000 across 135,000 sales, but the co-creator only took home $15,000 annually
- Chinese AI companies buy 1 million Nvidia GPUs in a single year, report claims
Informational only. No financial advice. Do your own research.