// RUN โ€” FITS

Can the Apple M3 Max 48GB run FRED-T5-XL?

Yes โ€” here's how fast and up to what context, with real measured numbers.

FRED-T5-XL on the Apple M3 Max 48GB

QuantFits?Max contextSpeedBeyond context
FP16 yes 583k 78.2-94.3 t/s ~2-2.4 (slow)
Q8 yes 610k 156.3-188.5 t/s ~3.9-4.7 (slow)
Q4 yes 621k 279.1-336.6 t/s ~7-8.4 (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 M3 Max 48GB run FRED-T5-XL?โ–ถ

Yes. At Q4 it generates ~279.1-336.6 tok/s and fits up to 621k context; beyond that it spills to SSD swap and slows to ~7-8.4 tok/s.

How much context fits?โ–ถ

At Q4, up to about 621k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.