// RUN โ€” FITS

Can the AMD Instinct MI455X run Unified-IO (XL)?

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

Unified-IO (XL) on the AMD Instinct MI455X

QuantFits?Max contextSpeedBeyond context
FP16 yes 5952k 2110.8-2579.8 t/s ~4.3-5.3 (slow)
Q8 yes 5997k 4221.5-5159.7 t/s ~8.6-10.5 (slow)
Q4 yes 6017k 7538.5-9213.7 t/s ~15.4-18.8 (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 Unified-IO (XL)?โ–ถ

Yes. At Q4 it generates ~7538.5-9213.7 tok/s and fits up to 6017k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~15.4-18.8 tok/s.

How much context fits?โ–ถ

At Q4, up to about 6017k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.