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// RUN — FITS
Can the Apple M1 Ultra 128GB run EMDR?
Yes — here's how fast and up to what context, with real measured numbers.
EMDR on the Apple M1 Ultra 128GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 1721k | 618.2-745.5 t/s | ~7.7-9.3 (slow) |
| Q8 | yes | 1728k | 1236.4-1490.9 t/s | ~15.5-18.6 (slow) |
| Q4 | yes | 1731k | 2207.8-2662.3 t/s | ~27.6-33.3 (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 M1 Ultra 128GB run EMDR?▶
Yes. At Q4 it generates ~2207.8-2662.3 tok/s and fits up to 1731k context; beyond that it spills to SSD swap and slows to ~27.6-33.3 tok/s.
How much context fits?▶
At Q4, up to about 1731k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.