CXMT Reportedly Faces Low HBM3E Yields During Risk Production

CXMT is reportedly encountering low yields in HBM3E risk production, according to TechPowerUp's account of South Korean media reports. The article says roughly three of every four HBM3E stacks are defective, implying a yield near 25%. The report attributes the challenge in part to immaturity in through-silicon-via technology, which is central to connecting stacked DRAM dies. It also says CXMT is attempting an eight-high HBM3E configuration while its established competitors are progressing toward newer HBM generations. The yield figures, production status, and technical comparisons are reported rather than confirmed by CXMT in the supplied material. The development should therefore be treated as a reported indicator of the execution gap in China's high-bandwidth-memory manufacturing efforts, not a verified company disclosure.