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// RUN — FITS
Can the Apple M2 Ultra 64GB run Rita-XLarge?
Yes — here's how fast and up to what context, with real measured numbers.
Rita-XLarge on the Apple M2 Ultra 64GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 819k | 226.7-273.3 t/s | ~2.8-3.4 (slow) |
| Q8 | yes | 838k | 453.3-546.7 t/s | ~5.7-6.8 (slow) |
| Q4 | yes | 846k | 809.5-976.2 t/s | ~10.1-12.2 (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 64GB run Rita-XLarge?▶
Yes. At Q4 it generates ~809.5-976.2 tok/s and fits up to 846k context; beyond that it spills to SSD swap and slows to ~10.1-12.2 tok/s.
How much context fits?▶
At Q4, up to about 846k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.