// RUN — FITS

Can the Apple M2 Ultra 64GB run Orion Star (猎户星空大模型)?

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

Orion Star (猎户星空大模型) on the Apple M2 Ultra 64GB

QuantFits?Max contextSpeedBeyond context
FP16 yes 172k 19.4-23.4 t/s ~0.2-0.3 (slow)
Q8 yes 257k 38.9-46.9 t/s ~0.5-0.6 (slow)
Q4 yes 295k 69.4-83.7 t/s ~0.9-1 (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 M2 Ultra 64GB run Orion Star (猎户星空大模型)?

Yes. At Q4 it generates ~69.4-83.7 tok/s and fits up to 295k context; beyond that it spills to SSD swap and slows to ~0.9-1 tok/s.

How much context fits?

At Q4, up to about 295k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.