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// RUN — FITS
Can the Instinct MI455X run Jais-70B?
Yes — here's how fast and up to what context, with real measured numbers.
Jais-70B on the Instinct MI455X
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 781k | 88.2-107.8 t/s | ~0.2-0.2 (slow) |
| Q8 | yes | 995k | 176.4-215.6 t/s | ~0.4-0.4 (slow) |
| Q4 | yes | 1089k | 315-385 t/s | ~0.6-0.8 (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 MI455X run Jais-70B?▶
Yes. At Q4 it generates ~315-385 tok/s and fits up to 1089k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~0.6-0.8 tok/s.
How much context fits?▶
At Q4, up to about 1089k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.