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Can V100 32GB SXM2 run gpt-oss-20b?

NVIDIA · 32 GB HBM2 · 900 GB/s bandwidth · OpenAI · 21.5B (active 3.6B) · MoE · model ctx up to 128K

✅ Yes — V100 32GB SXM2 (32 GB) can run gpt-oss-20b at Q4 (8K)
VRAM: 13.01 GB needed of 32 GB
Speed: ~268.7 tok/s (estimated)
AA · GreatComposite score: VRAM headroom × 0.5 + tok/s speed × 0.5. Q4 @ 8K context.
CUDA
Estimates from memory-bandwidth formula; rows marked "measured" override. Methodology.

Fit & speed by quant and context

QuantContextVRAM neededFits?tok/s (decode)
Q44K12.92 GBYes268.7 ± est.
Q48K default13.01 GBYes268.7 ± est.
Q432K13.58 GBYes268.7 ± est.
FP164K44.09 GBNo65.7 ± est.
FP168K default44.19 GBNo65.4 ± est.
FP1632K44.75 GBNo63.8 ± 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 neededV100 32GB SXM2 VRAM
Q411.83 GB0.19 GB1 GB13.01 GB32 GB
FP1643.0 GB0.19 GB1 GB44.19 GB32 GB

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