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NVIDIA revises Vera Rubin bandwidth specs, says earlier benchmarks used production systems

NVIDIA has lowered Vera Rubin’s listed HBM4 bandwidth from 22TB/s to 19.2TB/s and NVLink 6 bandwidth from 3.6TB/s to 3TB/s. The company says the revised figures reflect sustained production-system performance rather than early architectural targets. It also says previously published third-party benchmarks already used production configurations, so their results are unaffected by the specification changes.

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NVIDIA revises Vera Rubin bandwidth specs, says earlier benchmarks used production systems
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What to know

  • 01

    The listed HBM4 and NVLink 6 bandwidth figures decreased by 12.7% and 16.7%, respectively.

  • 02

    The revisions apply to all Vera Rubin configurations, including NVL72 racks and NVL8 systems.

Why it matters

The revisions concern component bandwidth, while NVIDIA emphasizes that application performance depends on the entire data-center system.

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