Radeon RX 7900 XTX vs RTX 4080 SUPER
Short answer: which is best?
Radeon RX 7900 XTX is 30.9 % stronger than RTX 4080 SUPER. Radeon RX 7900 XTX ranks #2 of 58 measured graphics cards at WhatFPS (18,924 GPU score over 2 verified runs). RTX 4080 SUPER ranks #6 of 58 measured graphics cards at WhatFPS (14,460 GPU score over 2 verified runs). The numbers are measured in 4 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | Radeon RX 7900 XTX | RTX 4080 SUPER |
|---|---|---|
| GPU score (the card's own performance) | 18,924 | 14,460 |
| Best rig (GAMING — whole PC) | 13,434 | 13,665 |
| Earth II (Vulkan) | 79.8 FPS | 62.6 FPS |
| Mission to Earth II (DX12) | 101.6 FPS | 79.2 FPS |
| Earth II Landing (DX12 Ultimate) | 89.5 FPS | 66.3 FPS |
| Supernova (DX11) | 41.7 FPS | 99.7 FPS |
| Memory bandwidth | 122 GB/s | 163 GB/s |
| VRAM | 24 GB | 16 GB |
| Ray tracing | Yes | Yes |
Fragz' verdict
The Radeon RX 7900 XTX is the clear winner here, leading the RTX 4080 SUPER by a substantial 30.9% in overall GPU score. This performance edge is evident across our gaming scenes, with the Radeon card achieving significantly higher FPS in Earth II (Vulkan), Mission to Earth II (DX12), and Earth II Landing (DX12 Ultimate). Its much higher raw compute (ALU index) and larger 24 GB of VRAM likely contribute to this strong showing, providing more muscle for future titles. However, the data for both cards comes from very thin sample sizes, with only two verified runs for the Radeon and just one for the RTX, so these results should be viewed with caution. Despite the overall lead, the RTX 4080 SUPER does boast higher memory bandwidth at 163 GB/s and a reported peak clock of 2775 MHz, which could appeal to some users.
Generated September 19, 2026 from the 4 verified runs available then. The verdict is never silently rewritten — new numbers get a new verdict.
What the numbers mean
The GPU score is the graphics card's own performance — that is what we rank on. GAMING is the whole rig's score in the best PC we measured the card in, and depends on processor, memory and storage. We show both and never mix them.
All numbers come from our benchmark suite: four hand-built 3D scenes written directly against the graphics APIs in Rust, the same load on every PC. The methodology is open at https://whatfps.com/metodik
All measurements for Radeon RX 7900 XTX · All measurements for RTX 4080 SUPER