// RUN โ€” FITS

Can the Instinct MI430X run ERNIE-4.5-21B-A3B?

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

ERNIE-4.5-21B-A3B on the Instinct MI430X

QuantFits?Max contextSpeedBeyond context
FP16 yes 1350k 349.5-427.2 t/s ~0.6-0.7 (slow)
Q8 yes 1430k 699-854.3 t/s ~1.2-1.5 (slow)
Q4 yes 1466k 1248.2-1525.6 t/s ~2.1-2.6 (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 Instinct MI430X run ERNIE-4.5-21B-A3B?โ–ถ

Yes. At Q4 it generates ~1248.2-1525.6 tok/s and fits up to 1466k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~2.1-2.6 tok/s.

How much context fits?โ–ถ

At Q4, up to about 1466k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.