// RUN โ€” FITS

Can the Apple M1 Ultra 64GB run Reason-ModernColBERT?

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

Reason-ModernColBERT on the Apple M1 Ultra 64GB

QuantFits?Max contextSpeedBeyond context
FP16 yes 851k 1813.3-2186.7 t/s ~22.7-27.3 (slow)
Q8 yes 854k 3626.7-4373.3 t/s ~45.3-54.7 (slow)
Q4 yes 855k 6476.2-7809.5 t/s ~81-97.6 (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 64GB run Reason-ModernColBERT?โ–ถ

Yes. At Q4 it generates ~6476.2-7809.5 tok/s and fits up to 855k context; beyond that it spills to SSD swap and slows to ~81-97.6 tok/s.

How much context fits?โ–ถ

At Q4, up to about 855k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.