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// RUN — FITS
Can the AMD Radeon RX 7900 XT run BigGAN-deep 512x512?
Yes — here's how fast and up to what context, with real measured numbers.
BigGAN-deep 512x512 on the AMD Radeon RX 7900 XT
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 254k | 2236.1-2733 t/s | ~111.8-136.7 (slow) |
| Q8 | yes | 256k | 4472.3-5466.1 t/s | ~223.6-273.3 (slow) |
| Q4 | yes | 257k | 7986.2-9760.9 t/s | ~399.3-488 (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 XT run BigGAN-deep 512x512?▶
Yes. At Q4 it generates ~7986.2-9760.9 tok/s and fits up to 257k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~399.3-488 tok/s.
How much context fits?▶
At Q4, up to about 257k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.