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// RUN — FITS
Can the Apple M4 Max 128GB run Generative BST?
Yes — here's how fast and up to what context, with real measured numbers.
Generative BST on the Apple M4 Max 128GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 724k | 19.7-23.7 t/s | ~0.4-0.4 (slow) |
| Q8 | yes | 796k | 39.4-47.5 t/s | ~0.7-0.9 (slow) |
| Q4 | yes | 827k | 70.3-84.8 t/s | ~1.3-1.6 (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 128GB run Generative BST?▶
Yes. At Q4 it generates ~70.3-84.8 tok/s and fits up to 827k context; beyond that it spills to SSD swap and slows to ~1.3-1.6 tok/s.
How much context fits?▶
At Q4, up to about 827k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.