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SemiAnalysis:Nvidia Rubin Ultra 将搭载 192GB HBM4,容量大幅下调

2026-08-25 08:34:17

ChainCatcher 消息,SemiAnalysis 发文称,Nvidia Rubin Ultra 将搭载 192GB 的 HBM4 8-hi 内存。这不仅较最初预览的 1TB HBM 出现大幅下调,甚至低于常规版 Rubin 的 288GB 容量。

HBM 配置被削减至原先约五分之一的原因包括:四裸片 Rubin Ultra 方案取消后,cube 数量减至 8 个;堆叠高度由 16-hi 降至 8-hi;并采用使用 24Gb 裸片的 HBM4,而非 32Gb 裸片的 HBM4E。后续或推出 8-hi HBM4E 升级版本。

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