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Can B200 192GB SXM run Hy3?

NVIDIA · 192 GB HBM3e · 8000 GB/s bandwidth · Tencent · 295.0B (active 21.0B) · MoE · model ctx up to 256K

Yes — the B200 192GB SXM (192 GB HBM3e) can run Hy3. At Q4 with the default 8K context it needs ≈ 167.45 GB VRAM (weights 162.25 GB + KV cache 4.2 GB + 1 GB runtime overhead), which fits within 192 GB. Decode at Q4/8K: ≈ 242.4 tok/s (estimated, batch 1). FP16 needs ≈ 595.2 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)
Q44K165.35 GBYes242.4 est.
Q48K default167.45 GBYes242.4 est.
Q432K180.05 GBYes242.4 est.
FP164K593.1 GBNo20.0 est.
FP168K default595.2 GBNo19.8 est.
FP1632K607.8 GBNo19.0 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 neededB200 192GB SXM VRAM
Q4162.25 GB4.2 GB1 GB167.45 GB192 GB
FP16590.0 GB4.2 GB1 GB595.2 GB192 GB

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