According to a recent Citigroup analysis, CXMT, China's domestic memory chipmaker, is demonstrating significant progress in its DDR5 production yields. The company's DDR5 yield rates had reached approximately 80%, marking a substantial improvement from its initial 50% yields when production began. This progress builds on CXMT's experience with DDR4 manufacturing, where the company has achieved yields of around 90%. The company currently operates two fab facilities in Hefei, with Fab 1 dedicated to DDR4 production on 19 nm process technology and a 100,000 wafer per month capacity. Fab 2 focuses on DDR5 production using 17 nm technology, with a current capacity of 50,000 wafers per month. CXMT's DDR5 yields could improve further to approximately 90% by the end of 2025.

Despite these improvements, CXMT faces technological challenges compared to industry leaders. The company's current production process is 19 nm for DDR4 and 17 nm for DDR5, lagging behind competitors like Samsung and SK Hynix, which manufacture 12 nm DDR5 chips. This technology gap results in higher power consumption and less favorable form factors for CXMT's products. The company primarily targets domestic Chinese smartphone and computing OEM customers. Looking ahead, CXMT plans to expand its DDR5 and HBM capabilities, with a potential additional capacity of 50,000 wafers per month at Fab 2 in 2025, if market conditions prove favorable. The company is also making progress on HBM2 development, with customer sampling underway and low-volume production expected to begin in mid-2025.