// RUN โ€” FITS

Can the NVIDIA GeForce RTX 4090 run MegaMolBART?

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

MegaMolBART on the NVIDIA GeForce RTX 4090

QuantFits?Max contextSpeedBeyond context
FP16 yes 313k 8176-9744 t/s ~324.4-386.7 (slow)
Q8 yes 313k 16352-19488 t/s ~648.9-773.3 (slow)
Q4 yes 314k 29200-34800 t/s ~1158.7-1381 (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 NVIDIA GeForce RTX 4090 run MegaMolBART?โ–ถ

Yes. At Q4 it generates ~29200-34800 tok/s and fits up to 314k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~1158.7-1381 tok/s.

How much context fits?โ–ถ

At Q4, up to about 314k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.