// RUN โ€” FITS

Can the Apple M2 Ultra 64GB run Transformer (Adaptive Input Embeddings) WT103?

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

Transformer (Adaptive Input Embeddings) WT103 on the Apple M2 Ultra 64GB

QuantFits?Max contextSpeedBeyond context
FP16 yes 848k 1101.2-1327.9 t/s ~13.8-16.6 (slow)
Q8 yes 852k 2202.4-2655.9 t/s ~27.5-33.2 (slow)
Q4 yes 854k 3932.9-4742.6 t/s ~49.2-59.3 (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 M2 Ultra 64GB run Transformer (Adaptive Input Embeddings) WT103?โ–ถ

Yes. At Q4 it generates ~3932.9-4742.6 tok/s and fits up to 854k context; beyond that it spills to SSD swap and slows to ~49.2-59.3 tok/s.

How much context fits?โ–ถ

At Q4, up to about 854k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.