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Can H100 80GB SXM5 run Qwen3-Next-80B-A3B-Instruct?

NVIDIA · 80 GB HBM3 · 3350 GB/s bandwidth · Alibaba · 81.3B (active 3B) · MoE · model ctx up to 256K

Yes — the H100 80GB SXM5 (80 GB HBM3) can run Qwen3-Next-80B-A3B-Instruct. At Q4 with the default 8K context it needs ≈ 46.32 GB VRAM (weights 44.72 GB + KV cache 0.6 GB + 1 GB runtime overhead), which fits within 80 GB. Decode at Q4/8K: ≈ 710.6 tok/s (estimated, batch 1). FP16 needs ≈ 164.2 GB — does not fit on this card. Estimates come from memory-bandwidth math; rows tagged measured override estimates. Relative ranking is more reliable than absolute tok/s. Methodology.

Fit & speed by quant and context

QuantContextVRAM neededFits?tok/s (decode)
Q44K46.02 GBYes710.6 est.
Q48K default46.32 GBYes710.6 est.
Q432K48.12 GBYes710.6 est.
FP164K163.9 GBNo133.0 est.
FP168K default164.2 GBNo132.5 est.
FP1632K166.0 GBNo129.7 est.

Fits = weights + KV(ctx) + 1 GB overhead ≤ 95% of VRAM. Measured anchors are context-agnostic; the fit verdict is recomputed per context. A missing tok/s means the model is far beyond this card (offload-only territory).

VRAM breakdown at 8K context

QuantWeightsKV cacheOverheadTotal neededH100 80GB SXM5 VRAM
Q444.72 GB0.6 GB1 GB46.32 GB80 GB
FP16162.6 GB0.6 GB1 GB164.2 GB80 GB

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