// RUN โ€” FITS

Can the Apple M1 Ultra 128GB run PLATO-XL?

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

PLATO-XL on the Apple M1 Ultra 128GB

QuantFits?Max contextSpeedBeyond context
FP16 yes 560k 24.7-29.8 t/s ~0.3-0.4 (slow)
Q8 yes 627k 49.5-59.6 t/s ~0.6-0.7 (slow)
Q4 yes 656k 88.3-106.5 t/s ~1.1-1.3 (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 PLATO-XL?โ–ถ

Yes. At Q4 it generates ~88.3-106.5 tok/s and fits up to 656k context; beyond that it spills to SSD swap and slows to ~1.1-1.3 tok/s.

How much context fits?โ–ถ

At Q4, up to about 656k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.