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// RUN — FITS
Can the NVIDIA RTX PRO 6000 Blackwell run OPT-66B?
Yes — here's how fast and up to what context, with real measured numbers.
OPT-66B on the NVIDIA RTX PRO 6000 Blackwell
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | no | — | — | — |
| Q8 | yes | 64k | 19.8-23.6 t/s | ~0.4-0.5 (slow) |
| Q4 | yes | 152k | 35.4-42.2 t/s | ~0.8-0.9 (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 RTX PRO 6000 Blackwell run OPT-66B?▶
Yes. At Q4 it generates ~35.4-42.2 tok/s and fits up to 152k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~0.8-0.9 tok/s.
How much context fits?▶
At Q4, up to about 152k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.