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CXMT plans HBM3E production with 20% to 30% yield despite quality checks
China's ChangXin Memory Technologies, known as CXMT, is reportedly moving forward with HBM3E production despite significant manufacturing challenges.
This advanced memory chip is crucial for AI processors. Reports indicate that CXMT plans to ship this memory even though yields are low, estimated between 20% and 30%.
For context, in most industrial settings, a failure rate reaching 70% to 80% would halt operations. However, within China's current AI chip sector, this level of output appears to initiate activity.
CXMT intends to commence limited commercial production within the next two months, which is a controlled rollout while the firm addresses its production issues. This contrasts with market leader SK Hynix, which reportedly achieves yields near 70% on similar products.
Furthermore, the research suggests CXMT's current production capabilities align more closely with the preceding HBM3 standard rather than the current HBM3E specification, meaning the chip's performance profile may be slightly behind the next-generation designation.
High-bandwidth memory facilitates rapid data transfer by stacking DRAM chips vertically next to an AI processor, a capability vital for training large AI models.
The impetus for this domestic push stems from U.S. export controls imposed in December 2024, which restricted Chinese purchasers from accessing advanced memory from foreign suppliers like SK Hynix and Samsung.
As China's largest DRAM producer by revenue, CXMT is receiving real-world feedback by having shipped HBM3E samples to domestic entities such as Alibaba's chip unit T-Head and AI chip designer Cambricon for preliminary assessment.
This situation highlights how geopolitical trade restrictions can create protected domestic markets, providing crucial opportunities for local firms to gain validation while improving technological parity.
Why it matters
This development highlights the strategic race in AI hardware manufacturing amidst geopolitical trade restrictions. The ability of domestic suppliers to produce advanced memory, even with low yields, is critical for regional tech autonomy. Readers should watch how customer validation from clients like Alibaba's T-Head impacts the viability of this supply chain alternative.
