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// RUN — FITS
Can the AMD Radeon RX 7900 XTX run Reason-ModernColBERT?
Yes — here's how fast and up to what context, with real measured numbers.
Reason-ModernColBERT on the AMD Radeon RX 7900 XTX
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 309k | 2016-2464 t/s | ~84-102.7 (slow) |
| Q8 | yes | 312k | 4032-4928 t/s | ~168-205.3 (slow) |
| Q4 | yes | 313k | 7200-8800 t/s | ~300-366.7 (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 Radeon RX 7900 XTX run Reason-ModernColBERT?▶
Yes. At Q4 it generates ~7200-8800 tok/s and fits up to 313k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~300-366.7 tok/s.
How much context fits?▶
At Q4, up to about 313k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.