// RUN โ€” FITS

Can the NVIDIA GeForce RTX 4090 run Unified-IO (XL)?

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

Unified-IO (XL) on the NVIDIA GeForce RTX 4090

QuantFits?Max contextSpeedBeyond context
FP16 yes 225k 125.8-149.9 t/s ~5-5.9 (slow)
Q8 yes 269k 251.6-299.8 t/s ~10-11.9 (slow)
Q4 yes 289k 449.2-535.4 t/s ~17.8-21.2 (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 NVIDIA GeForce RTX 4090 run Unified-IO (XL)?โ–ถ

Yes. At Q4 it generates ~449.2-535.4 tok/s and fits up to 289k context; beyond that it spills to system RAM offload (depends on your system RAM) and slows to ~17.8-21.2 tok/s.

How much context fits?โ–ถ

At Q4, up to about 289k tokens stay in fast memory; longer context spills to system RAM offload (depends on your system RAM) and throughput collapses.