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// RUN — FITS
Can the Apple M2 Ultra 64GB run BigGAN-deep 512x512?
Yes — here's how fast and up to what context, with real measured numbers.
BigGAN-deep 512x512 on the Apple M2 Ultra 64GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 853k | 2413.6-2910.5 t/s | ~30.2-36.4 (slow) |
| Q8 | yes | 854k | 4827.2-5821 t/s | ~60.3-72.8 (slow) |
| Q4 | yes | 855k | 8620-10394.7 t/s | ~107.7-129.9 (slow) |
Estimate (memory-bound). Beyond "max context" the KV cache spills to SSD swap and speed drops to the "beyond" figure.
FAQ
Can the Apple M2 Ultra 64GB run BigGAN-deep 512x512?▶
Yes. At Q4 it generates ~8620-10394.7 tok/s and fits up to 855k context; beyond that it spills to SSD swap and slows to ~107.7-129.9 tok/s.
How much context fits?▶
At Q4, up to about 855k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.