// RUN โ€” FITS

Can the AMD Instinct MI300X 192GB 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 AMD Instinct MI300X 192GB

QuantFits?Max contextSpeedBeyond context
FP16 yes 508k 79.5-97.2 t/s ~0.6-0.7 (slow)
Q8 yes 588k 159-194.3 t/s ~1.2-1.5 (slow)
Q4 yes 623k 283.9-347 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 AMD Instinct MI300X 192GB run ERNIE-4.5-21B-A3B?โ–ถ

Yes. At Q4 it generates ~283.9-347 tok/s and fits up to 623k 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 623k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.