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// RUN — FITS
Can the AMD Instinct MI300X 192GB run Tri-21B?
Yes — here's how fast and up to what context, with real measured numbers.
Tri-21B on the AMD Instinct MI300X 192GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 510k | 80.5-98.4 t/s | ~0.6-0.7 (slow) |
| Q8 | yes | 589k | 161.1-196.9 t/s | ~1.2-1.5 (slow) |
| Q4 | yes | 624k | 287.6-351.5 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 AMD Instinct MI300X 192GB run Tri-21B?▶
Yes. At Q4 it generates ~287.6-351.5 tok/s and fits up to 624k 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 624k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.