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// RUN — FITS
Can the Apple M4 Max 64GB run Stable Diffusion 3.5 Large?
Yes — here's how fast and up to what context, with real measured numbers.
Stable Diffusion 3.5 Large on the Apple M4 Max 64GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 304k | 22.9-27.6 t/s | ~0.4-0.5 (slow) |
| Q8 | yes | 366k | 45.8-55.3 t/s | ~0.8-1 (slow) |
| Q4 | yes | 393k | 81.9-98.7 t/s | ~1.5-1.8 (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 M4 Max 64GB run Stable Diffusion 3.5 Large?▶
Yes. At Q4 it generates ~81.9-98.7 tok/s and fits up to 393k context; beyond that it spills to SSD swap and slows to ~1.5-1.8 tok/s.
How much context fits?▶
At Q4, up to about 393k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.