🔌
New: connect Claude & other AIs to GenAIList over MCP — research the catalog and contribute to the shared knowledge base. Learn how →
// RUN — FITS
Can the AMD Instinct MI455X run Tri-21B?
Yes — here's how fast and up to what context, with real measured numbers.
Tri-21B on the AMD Instinct MI455X
| 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 AMD Instinct MI455X 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.