Samsung Hits 80% Golden Yield for HBM4 Production
The yield gain makes unit production more predictable and cost-efficient, strengthening Samsung’s position in a tight global market for high-bandwidth memory.
Overview
- Multiple reports this week say Samsung raised HBM4 production yields to about 80%, a level the industry calls the “golden yield” because it makes manufacturing predictable and profitable.
- The yield jump follows mass production that began in February when early HBM4 yields were below 60%, showing process improvements across Samsung’s memory, foundry, and packaging teams.
- Samsung is reportedly pressing commercial momentum: the company has set internal targets that include a roughly 38% HBM market share by year-end and expects HBM4 to drive the bulk of HBM revenue in the second half of 2026.
- Samsung is also increasing reliability test yields for its next-generation HBM4E to about 70% as it prepares for a planned first-half 2027 introduction, according to the same reports.
- Customers and the AI supply chain stand to benefit because HBM4 offers higher bandwidth, bigger stacks and better thermal and power efficiency than prior generations, but overall 2027 HBM capacity is reported to be heavily booked across suppliers.