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Can the AMD Instinct MI455X run RoBERTa Large?
Yes — here's how fast and up to what context, with real measured numbers.
RoBERTa Large on the AMD Instinct MI455X
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 6031k | 17391.5-21256.3 t/s | ~35.5-43.4 (slow) |
| Q8 | yes | 6036k | 34783.1-42512.7 t/s | ~71-86.8 (slow) |
| Q4 | yes | 6039k | 62112.7-75915.5 t/s | ~126.8-154.9 (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 MI455X run RoBERTa Large?▶
Yes. At Q4 it generates ~62112.7-75915.5 tok/s and fits up to 6039k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~126.8-154.9 tok/s.
How much context fits?▶
At Q4, up to about 6039k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.