// RUN โ€” FITS

Can the AMD Instinct MI300X 192GB run Stable Diffusion 3.5 Large?

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

Stable Diffusion 3.5 Large on the AMD Instinct MI300X 192GB

QuantFits?Max contextSpeedBeyond context
FP16 yes 1213k 206.1-251.9 t/s ~1.6-1.9 (slow)
Q8 yes 1274k 412.2-503.8 t/s ~3.1-3.8 (slow)
Q4 yes 1302k 736.1-899.7 t/s ~5.6-6.8 (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 MI300X 192GB run Stable Diffusion 3.5 Large?โ–ถ

Yes. At Q4 it generates ~736.1-899.7 tok/s and fits up to 1302k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~5.6-6.8 tok/s.

How much context fits?โ–ถ

At Q4, up to about 1302k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.