// RUN โ€” FITS

Can the Apple M2 Ultra 192GB run BERT-Large?

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

BERT-Large on the Apple M2 Ultra 192GB

QuantFits?Max contextSpeedBeyond context
FP16 yes 2603k 800-964.7 t/s ~10-12.1 (slow)
Q8 yes 2609k 1600-1929.4 t/s ~20-24.1 (slow)
Q4 yes 2611k 2857.1-3445.4 t/s ~35.7-43.1 (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 192GB run BERT-Large?โ–ถ

Yes. At Q4 it generates ~2857.1-3445.4 tok/s and fits up to 2611k context; beyond that it spills to SSD swap and slows to ~35.7-43.1 tok/s.

How much context fits?โ–ถ

At Q4, up to about 2611k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.