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Can L40S 48GB run gemma-3-27b-it?

NVIDIA · 48 GB GDDR6 · 864 GB/s bandwidth · Google · 27.4B · model ctx up to 128K

Yes — the L40S 48GB (48 GB GDDR6) can run gemma-3-27b-it. At Q4 with the default 8K context it needs ≈ 21.51 GB VRAM (weights 15.07 GB + KV cache 5.44 GB + 1 GB runtime overhead), which fits within 48 GB. Decode at Q4/8K: ≈ 20.2 tok/s (estimated, batch 1). FP16 needs ≈ 61.24 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)
Q44K18.79 GBYes20.2 est.
Q48K default21.51 GBYes20.2 est.
Q432K37.83 GBYes20.2 est.
FP164K58.52 GBNo10.7 est.
FP168K default61.24 GBNo9.8 est.
FP1632K77.56 GBNo6.1 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 neededL40S 48GB VRAM
Q415.07 GB5.44 GB1 GB21.51 GB48 GB
FP1654.8 GB5.44 GB1 GB61.24 GB48 GB

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