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// RUN — FITS
Can the Apple M4 Max 48GB run UDSMProt?
Yes — here's how fast and up to what context, with real measured numbers.
UDSMProt on the Apple M4 Max 48GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 635k | 6558.8-7909.2 t/s | ~120.1-144.9 (slow) |
| Q8 | yes | 636k | 13117.7-15818.4 t/s | ~240.3-289.7 (slow) |
| Q4 | yes | 636k | 23424.4-28247.1 t/s | ~429-517.3 (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 M4 Max 48GB run UDSMProt?▶
Yes. At Q4 it generates ~23424.4-28247.1 tok/s and fits up to 636k context; beyond that it spills to SSD swap and slows to ~429-517.3 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.