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Can H100 80GB SXM5 run gemma-3-27b-it?

NVIDIA · 80 GB HBM3 · 3350 GB/s bandwidth · google · 27.4B · model ctx up to NoneK

SS · ExcellentComposite score: VRAM headroom × 0.5 + tok/s speed × 0.5. Q4 @ 8K context.
CUDA

Yes — the H100 80GB SXM5 (80 GB HBM3) can run gemma-3-27b-it. At Q4 with the default 8K context it needs ≈ 21.55 GB VRAM (weights 15.07 GB + KV cache 5.48 GB + 1 GB runtime overhead), which fits within 80 GB. Decode at Q4/8K: ≈ 77.8 tok/s (estimated, batch 1). FP16 (≈ 61.28 GB) also fits, at ≈ 21.4 tok/s (estimated). 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)
Q44K18.81 GBYes77.8 ± est.
Q48K default21.55 GBYes77.8 ± est.
Q432K37.99 GBYes77.8 ± est.
FP164K58.54 GBYes21.4 ± est.
FP168K default61.28 GBYes21.4 ± est.
FP1632K77.72 GBYes21.4 ± 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
Q415.07 GB5.48 GB1 GB21.55 GB80 GB
FP1654.8 GB5.48 GB1 GB61.28 GB80 GB

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