CXMT to Launch DDR5 RDIMM Server Memory Using 4F² DRAM by Year-End
The Chinese chipmaker says it has secured more than 300 published patents tied to its 4F² structure and will ship the server module by the end of 2026.
CXMT plans to release a server memory product called DDR5 RDIMM built on its 4F² DRAM technology by the end of this year, the company said. The announcement was reported by inews24.com.
CXMT President Cao Kanwei unveiled the development results for the 4F² DRAM structure at the 4th Integrated Circuit and Chiplet Conference in Shanghai. According to the company, the 4F² structure uses its own vertical surrounding gate (VSG) transistor technology, and CXMT said it has secured more than 300 published patents related to 4F².
The planned product is a server memory module, a segment where Samsung Electronics, SK hynix and Micron hold the leading positions. In second-quarter global DRAM revenue share, Samsung Electronics ranked first with 39.4%, SK hynix had 24.9%, Micron had 23.3%, and CXMT ranked fourth with 9.5%, according to TrendForce.
Competitors' 4F² Work
Other memory makers have presented their own 4F² research. In February, Samsung Electronics presented research results on a 16Gb DRAM prototype using a 4F² structure and wafer-to-wafer hybrid bonding at ISSCC 2026. In June 2025, SK hynix presented 4F² vertical gate (VG) structure and 3D DRAM as next-generation technology directions at VLSI 2025.
Quick answers
What is CXMT's new server memory product?
CXMT plans to release a server memory product called DDR5 RDIMM using its 4F² DRAM technology by the end of this year.
When will CXMT release the DDR5 RDIMM?
CXMT said the DDR5 RDIMM is planned for release by the end of this year.
How many patents does CXMT hold for 4F²?
CXMT stated it has secured more than 300 published patents related to 4F².