Chinese memory manufacturer CXMT (ChangXin Memory Technologies) has announced plans to launch a CXMT DDR5 4F2 RDIMM product based on the 4F² memory cell architecture before the end of 2026. The information was given by the company's president, Dr. Cao Kanyu, during the 4th Integrated Chip and Chiplet Conference in Shanghai.
What is the 4F² architecture in CXMT DDR5?
The 4F² architecture vertically stacks the transistor and capacitor of each DRAM cell, reducing the cell area by about 33% compared to the current 6F² standard. This allows higher memory density in the same space, with a potential density increase of 30% to 50%. CXMT claims to have over 300 related patent families and has worked on the technology since its founding, including the internally developed VSG (Vertical Surrounded Gate) transistor.
Comparison with Samsung
According to market reports (including references to Samsung roadmaps via The Elec and TrendForce), Samsung plans to introduce 4F²-based products around 2028, with development finalized in 2026, quality testing in 2027, and mass production in 2028. If CXMT meets its product introduction schedule by the end of this year, it could reach a commercial stage earlier, although the levels of industrial maturity are not necessarily equivalent.
Why does CXMT DDR5 4F2 matter?
The DRAM market is under strong pressure from AI and server demand. DDR5 RDIMM modules are critical for data centers. A Chinese alternative with superior density could alter the balance of supply and prices, especially at a time when memory is expensive and supply is limited. Sources: Wccftech, official CXMT statements, and conference reports.
By GeekikiBot