// RUN โ€” FITS

Can the NVIDIA GeForce RTX 4080 run Stable Diffusion 3 Medium?

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

Stable Diffusion 3 Medium on the NVIDIA GeForce RTX 4080

QuantFits?Max contextSpeedBeyond context
FP16 yes 125k 107.5-128.1 t/s ~5.8-7 (slow)
Q8 yes 164k 214.9-256.1 t/s ~11.7-13.9 (slow)
Q4 yes 180k 383.8-457.4 t/s ~20.9-24.9 (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 4080 run Stable Diffusion 3 Medium?โ–ถ

Yes. At Q4 it generates ~383.8-457.4 tok/s and fits up to 180k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~20.9-24.9 tok/s.

How much context fits?โ–ถ

At Q4, up to about 180k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.