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// RUN — FITS
Can the Instinct MI455X run Qwen2.5-14B?
Yes — here's how fast and up to what context, with real measured numbers.
Qwen2.5-14B on the Instinct MI455X
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 2237k | 420-513.3 t/s | ~0.9-1 (slow) |
| Q8 | yes | 2327k | 840-1026.7 t/s | ~1.7-2.1 (slow) |
| Q4 | yes | 2366k | 1500-1833.3 t/s | ~3.1-3.7 (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 MI455X run Qwen2.5-14B?▶
Yes. At Q4 it generates ~1500-1833.3 tok/s and fits up to 2366k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~3.1-3.7 tok/s.
How much context fits?▶
At Q4, up to about 2366k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.