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// RUN — FITS
Can the Apple M2 Ultra 192GB run Jais-30b (phase 1)?
Yes — here's how fast and up to what context, with real measured numbers.
Jais-30b (phase 1) on the Apple M2 Ultra 192GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 425k | 9.1-10.9 t/s | ~0.1-0.1 (slow) |
| Q8 | yes | 539k | 18.1-21.9 t/s | ~0.2-0.3 (slow) |
| Q4 | yes | 589k | 32.4-39 t/s | ~0.4-0.5 (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 M2 Ultra 192GB run Jais-30b (phase 1)?▶
Yes. At Q4 it generates ~32.4-39 tok/s and fits up to 589k context; beyond that it spills to SSD swap and slows to ~0.4-0.5 tok/s.
How much context fits?▶
At Q4, up to about 589k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.