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// RUN — FITS
Can the Apple M1 Ultra 128GB run Zagreus 0.4B?
Yes — here's how fast and up to what context, with real measured numbers.
Zagreus 0.4B on the Apple M1 Ultra 128GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 1723k | 680-820 t/s | ~8.5-10.3 (slow) |
| Q8 | yes | 1729k | 1360-1640 t/s | ~17-20.5 (slow) |
| Q4 | yes | 1732k | 2428.6-2928.6 t/s | ~30.4-36.6 (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 M1 Ultra 128GB run Zagreus 0.4B?▶
Yes. At Q4 it generates ~2428.6-2928.6 tok/s and fits up to 1732k context; beyond that it spills to SSD swap and slows to ~30.4-36.6 tok/s.
How much context fits?▶
At Q4, up to about 1732k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.