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SemiAnalysis:Nvidia Rubin Ultra 將搭載 192GB HBM4,容量大幅下調

2026-08-25 08:34:17

ChainCatcher 消息,SemiAnalysis 發文稱,Nvidia Rubin Ultra 將搭載 192GB 的 HBM4 8-hi 內存。這不僅較最初預覽的 1TB HBM 出現大幅下調,甚至低於常規版 Rubin 的 288GB 容量。

HBM 配置被削減至原先約五分之一的原因包括:四裸片 Rubin Ultra 方案取消後,cube 數量減至 8 個;堆疊高度由 16-hi 降至 8-hi;並採用使用 24Gb 裸片的 HBM4,而非 32Gb 裸片的 HBM4E。後續或推出 8-hi HBM4E 升級版本。

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