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// RUN — FITS
Can the NVIDIA L40S 48GB run Qwen3-14B?
Yes — here's how fast and up to what context, with real measured numbers.
Qwen3-14B on the NVIDIA L40S 48GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 80k | 21.3-25.4 t/s | ~1-1.2 (slow) |
| Q8 | yes | 170k | 42.6-50.8 t/s | ~2-2.4 (slow) |
| Q4 | yes | 210k | 76.1-90.7 t/s | ~3.5-4.2 (slow) |
Estimate (memory-bound). Beyond "max context" the KV cache spills to system RAM offload (depends on your system RAM) and speed drops to the "beyond" figure.
FAQ
Can the NVIDIA L40S 48GB run Qwen3-14B?▶
Yes. At Q4 it generates ~76.1-90.7 tok/s and fits up to 210k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~3.5-4.2 tok/s.
How much context fits?▶
At Q4, up to about 210k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.