// RUN โ€” FITS

Can the AMD Instinct MI455X run Mistral Medium 3.5?

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

Mistral Medium 3.5 on the AMD Instinct MI455X

QuantFits?Max contextSpeedBeyond context
FP16 yes 427k 48.2-59 t/s ~0.1-0.1 (slow)
Q8 yes 818k 96.5-117.9 t/s ~0.2-0.2 (slow)
Q4 yes 990k 172.3-210.5 t/s ~0.4-0.4 (slow)

Estimate (memory-bound). Beyond "max context" the KV cache spills to system RAM offload (depends on your system RAM) and speed drops to the "beyond" figure.

FAQ

Can the AMD Instinct MI455X run Mistral Medium 3.5?โ–ถ

Yes. At Q4 it generates ~172.3-210.5 tok/s and fits up to 990k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~0.4-0.4 tok/s.

How much context fits?โ–ถ

At Q4, up to about 990k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.