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// RUN — FITS
Can the NVIDIA L40S 48GB run minChatGPT?
Yes — here's how fast and up to what context, with real measured numbers.
minChatGPT on the NVIDIA L40S 48GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 601k | 192.4-229.3 t/s | ~8.9-10.6 (slow) |
| Q8 | yes | 626k | 384.8-458.6 t/s | ~17.8-21.2 (slow) |
| Q4 | yes | 637k | 687.2-819 t/s | ~31.8-37.9 (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 minChatGPT?▶
Yes. At Q4 it generates ~687.2-819 tok/s and fits up to 637k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~31.8-37.9 tok/s.
How much context fits?▶
At Q4, up to about 637k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.