RTX 4090 D vs RX 7800 XT

GPU AGPU B

Best verified output tok/s per model (single-stream generation). Hover a value for the quant.

Verified data on this pair is thin — most of the board is still pending review. Submit your own run and help fill the matrix: one prompt, three steps, no downloads.

RTX 4090 D2 verified runs · best 70.9 tok/s

RX 7800 XT1 verified run · best 42.0 tok/s

Model	RTX 4090 D	RX 7800 XT
Qwen3.8-27B	70.9 Q4_K_M	42.0 Unsloth-Dynamic-IQ4_XS

Head-to-head (models tested on both): RTX 4090 D 1 · RX 7800 XT 0 · tied 0 · data as of Sep 23, 2026. Full rules: methodology.

Related reading: RTX 5090 vs 3090 · quantization · Value index · Full board