China's CXMT says new memory-chip platform enters mass production

• CXMT unveiled two new 24-gigabit LPDDR5X products that hold 50% more data than prior comparable products and are already in mass production for smartphones and portable devices
• The platform achieved 11.95 nanometer feature spacing using 'quadruple patterning' process, which CXMT claims is on par with the most advanced mass-produced nodes in the industry
• The advance comes as Beijing seeks to reduce reliance on foreign semiconductor technology amid US export controls that have restricted China's access to advanced chipmaking equipment since 2022

Summary: CXMT Achieves Memory Chip Manufacturing Breakthrough

Key Development:

Chinese DRAM chipmaker CXMT announced on September 20, 2026, that its fifth-generation technology platform has entered mass production, marking a significant advance in China's semiconductor capabilities. The company, which listed on Shanghai's STAR Market this year, is positioning itself as a stronger competitor to global memory chip leaders Samsung Electronics, SK Hynix, and Micron Technology.

Technical Achievements:

• New platform produces chips with 11.95-nanometer spacing using quadruple patterning technology
• Delivers at least 50% more chip dies per wafer compared to fourth-generation platform
• Two new 24-gigabit LPDDR5X products unveiled, holding 50% more data than previous comparable products
• LPDDR5X chips target power-saving applications in smartphones and portable electronics
• CXMT executives claim process capability is "on par with the most advanced mass-produced nodes" in the industry

Strategic Context:

The advancement represents China's effort to reduce dependence on foreign semiconductor technology amid ongoing U.S. export controls since 2022, which have restricted China's access to advanced chipmaking equipment and software. CXMT, based in Hefei and China's leading DRAM producer, developed the platform through computer simulations and collaboration with Chinese chip-equipment makers.

Market Implications:

The breakthrough provides electronics manufacturers with an alternative supply source for mobile memory chips, potentially disrupting the dominance of established players in the global DRAM market. This development underscores China's growing technological independence in critical semiconductor manufacturing, despite Western restrictions on equipment access.