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// RUN — FITS
Can the Apple M2 Ultra 192GB run Qwen2.5 Instruct (72B)?
Yes — here's how fast and up to what context, with real measured numbers.
Qwen2.5 Instruct (72B) on the Apple M2 Ultra 192GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 79k | 3.7-4.5 t/s | ~0-0.1 (slow) |
| Q8 | yes | 301k | 7.5-9 t/s | ~0.1-0.1 (slow) |
| Q4 | yes | 399k | 13.4-16.1 t/s | ~0.2-0.2 (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 192GB run Qwen2.5 Instruct (72B)?▶
Yes. At Q4 it generates ~13.4-16.1 tok/s and fits up to 399k context; beyond that it spills to SSD swap and slows to ~0.2-0.2 tok/s.
How much context fits?▶
At Q4, up to about 399k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.