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// RUN — FITS
Can the Apple M4 Max 48GB run StableLM-2-1.6B?
Yes — here's how fast and up to what context, with real measured numbers.
StableLM-2-1.6B on the Apple M4 Max 48GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 586k | 112.9-136.1 t/s | ~2.1-2.5 (slow) |
| Q8 | yes | 611k | 225.8-272.3 t/s | ~4.1-5 (slow) |
| Q4 | yes | 622k | 403.2-486.2 t/s | ~7.4-8.9 (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 StableLM-2-1.6B?▶
Yes. At Q4 it generates ~403.2-486.2 tok/s and fits up to 622k context; beyond that it spills to SSD swap and slows to ~7.4-8.9 tok/s.
How much context fits?▶
At Q4, up to about 622k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.