Samsung’s HBM4 yield has risen to 80% four months ahead of schedule, and the company plans to boost its HBM market share to around 38% by the end of the year.
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According to South Korea’s Seoul Economic Daily, Samsung Electronics became the world’s first to start mass production and shipment of sixth-generation High Bandwidth Memory (HBM4) in February this year, and its yield has recently approached 80%. The yield stood at less than 60% in the early mass production phase but stabilized within half a year—about four months ahead of the original target of hitting 80% by the end of the year. The semiconductor industry typically labels an 80% yield as the "golden yield", meaning firms can cut defect rates while securing stable output and boosting profitability. Samsung Electronics said that with HBM4 yield entering a stable range, it plans to lift HBM4 revenue in the third quarter to more than triple the previous quarter’s figure, and raise HBM4’s share of total HBM revenue in the second half of the year to over 60%. The company also set a goal to raise its HBM market share to around 38% by year-end, matching its DRAM market share. The expanded supply of HBM4 will also support production of NVIDIA’s Vera Rubin AI accelerators. Lee Jong-hwan, a professor in the Department of System Semiconductor Engineering at Sangmyung University in South Korea, pointed out that for key clients like NVIDIA, sourcing from multiple suppliers is more beneficial than relying on a single vendor; Samsung can scale up HBM4 supply and rapidly grow its market share.
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