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// RUN — FITS
Can the Apple M1 Ultra 128GB run Minitron 4B?
Yes — here's how fast and up to what context, with real measured numbers.
Minitron 4B on the Apple M1 Ultra 128GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 1607k | 64.8-78.1 t/s | ~0.8-1 (slow) |
| Q8 | yes | 1671k | 129.5-156.2 t/s | ~1.6-2 (slow) |
| Q4 | yes | 1699k | 231.3-278.9 t/s | ~2.9-3.5 (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 Minitron 4B?▶
Yes. At Q4 it generates ~231.3-278.9 tok/s and fits up to 1699k context; beyond that it spills to SSD swap and slows to ~2.9-3.5 tok/s.
How much context fits?▶
At Q4, up to about 1699k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.