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// RUN — FITS
Can the Apple M4 Max 48GB run ProBERTa?
Yes — here's how fast and up to what context, with real measured numbers.
ProBERTa on the Apple M4 Max 48GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 635k | 4219.1-5087.7 t/s | ~77.3-93.2 (slow) |
| Q8 | yes | 636k | 8438.2-10175.5 t/s | ~154.5-186.4 (slow) |
| Q4 | yes | 636k | 15068.2-18170.5 t/s | ~276-332.8 (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 M4 Max 48GB run ProBERTa?▶
Yes. At Q4 it generates ~15068.2-18170.5 tok/s and fits up to 636k context; beyond that it spills to SSD swap and slows to ~276-332.8 tok/s.
How much context fits?▶
At Q4, up to about 636k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.