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NVIDIA Quietly Lowers Vera Rubin HBM4 Bandwidth By Up To 26%, NVLink Speeds Also Reduced

A detailed view of the NVIDIA Blackwell GPU architecture chip against a black background.

NVIDIA has quietly revised the specifications of its next-generation Vera Rubin AI computing platform, reducing HBM4 memory bandwidth and sixth-generation NVLink bandwidth across multiple configurations while increasing scale-out networking capabilities. Interestingly, the changes appear to have been made over a month ago, rather than being introduced recently. The revisions, highlighted by Guru3D and ITHome, are confirmed by comparing NVIDIA’s current Vera Rubin NVL72 specifications against archived versions of the same webpage. Specifically, Wayback Machine snapshots from September 1 and September 11, 2026, reveal that NVIDIA revised the published specifications sometime between those dates, without making a public announcement. As we […]

Read full article at https://wccftech.com/nvidia-quietly-lowers-vera-rubin-hbm4-bandwidth-by-up-to-26-nvlink-speeds-also-reduced/