// RUN โ€” FITS

Can the AMD Radeon RX 9070 XT run MegaMolBART?

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

MegaMolBART on the AMD Radeon RX 9070 XT

QuantFits?Max contextSpeedBeyond context
FP16 yes 200k 4508-5509.8 t/s ~280-342.2 (slow)
Q8 yes 201k 9016-11019.6 t/s ~560-684.4 (slow)
Q4 yes 201k 16100-19677.8 t/s ~1000-1222.2 (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 Radeon RX 9070 XT run MegaMolBART?โ–ถ

Yes. At Q4 it generates ~16100-19677.8 tok/s and fits up to 201k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~1000-1222.2 tok/s.

How much context fits?โ–ถ

At Q4, up to about 201k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.