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// RUN — FITS
Can the Apple M2 Ultra 64GB run ERNIE-Doc (247M)?
Yes — here's how fast and up to what context, with real measured numbers.
ERNIE-Doc (247M) on the Apple M2 Ultra 64GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 848k | 1101.2-1327.9 t/s | ~13.8-16.6 (slow) |
| Q8 | yes | 852k | 2202.4-2655.9 t/s | ~27.5-33.2 (slow) |
| Q4 | yes | 854k | 3932.9-4742.6 t/s | ~49.2-59.3 (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 ERNIE-Doc (247M)?▶
Yes. At Q4 it generates ~3932.9-4742.6 tok/s and fits up to 854k context; beyond that it spills to SSD swap and slows to ~49.2-59.3 tok/s.
How much context fits?▶
At Q4, up to about 854k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.