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// RUN — FITS
Can the Instinct MI440X run Tri-21B?
Yes — here's how fast and up to what context, with real measured numbers.
Tri-21B on the Instinct MI440X
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 1352k | 297.8-364 t/s | ~0.6-0.7 (slow) |
| Q8 | yes | 1431k | 595.7-728 t/s | ~1.2-1.5 (slow) |
| Q4 | yes | 1466k | 1063.7-1300 t/s | ~2.2-2.7 (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 Instinct MI440X run Tri-21B?▶
Yes. At Q4 it generates ~1063.7-1300 tok/s and fits up to 1466k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~2.2-2.7 tok/s.
How much context fits?▶
At Q4, up to about 1466k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.