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Can the Apple M2 Ultra 192GB run InternVL2_5-78B?
Yes โ here's how fast and up to what context, with real measured numbers.
InternVL2_5-78B on the Apple M2 Ultra 192GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 44k | 3.5-4.2 t/s | ~0-0.1 (slow) |
| Q8 | yes | 284k | 6.9-8.4 t/s | ~0.1-0.1 (slow) |
| Q4 | yes | 389k | 12.4-14.9 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 InternVL2_5-78B?โถ
Yes. At Q4 it generates ~12.4-14.9 tok/s and fits up to 389k context; beyond that it spills to SSD swap and slows to ~0.2-0.2 tok/s.
How much context fits?โถ
At Q4, up to about 389k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.