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// RUN — FITS
Can the NVIDIA B200 run Llama Nemotron Ultra 253B?
Yes — here's how fast and up to what context, with real measured numbers.
Llama Nemotron Ultra 253B on the NVIDIA B200
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | no | — | — | — |
| Q8 | no | — | — | — |
| Q4 | yes | 64k | 41.2-49.1 t/s | ~0.2-0.2 (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 B200 run Llama Nemotron Ultra 253B?▶
Yes. At Q4 it generates ~41.2-49.1 tok/s and fits up to 64k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~0.2-0.2 tok/s.
How much context fits?▶
At Q4, up to about 64k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.