// RUN โ€” FITS

Can the AMD Instinct MI325X run Mamba-2.8B?

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

Mamba-2.8B on the AMD Instinct MI325X

QuantFits?Max contextSpeedBeyond context
FP16 yes 3485k 675-825 t/s ~4.5-5.5 (slow)
Q8 yes 3528k 1350-1650 t/s ~9-11 (slow)
Q4 yes 3547k 2410.7-2946.4 t/s ~16.1-19.6 (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 MI325X run Mamba-2.8B?โ–ถ

Yes. At Q4 it generates ~2410.7-2946.4 tok/s and fits up to 3547k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~16.1-19.6 tok/s.

How much context fits?โ–ถ

At Q4, up to about 3547k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.