Radeon RX 7900 XTX vs RTX 5080
Short answer: which is best?
Radeon RX 7900 XTX is 13.7 % stronger than RTX 5080. Radeon RX 7900 XTX ranks #2 of 59 measured graphics cards at WhatFPS (18,924 GPU score over 2 verified runs). RTX 5080 ranks #3 of 59 measured graphics cards at WhatFPS (16,640 GPU score over 3 verified runs). The numbers are measured in 5 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | Radeon RX 7900 XTX | RTX 5080 |
|---|---|---|
| GPU score (the card's own performance) | 18,924 | 16,640 |
| Best rig (GAMING — whole PC) | 13,434 | 15,624 |
| Earth II (Vulkan) | 79.8 FPS | 74.3 FPS |
| Mission to Earth II (DX12) | 101.6 FPS | 86.2 FPS |
| Earth II Landing (DX12 Ultimate) | 89.5 FPS | 77.7 FPS |
| Supernova (DX11) | 41.7 FPS | 129.1 FPS |
| Memory bandwidth | 122 GB/s | 360 GB/s |
| VRAM | 24 GB | 16 GB |
| Ray tracing | Yes | Yes |
Fragz' verdict
The Radeon RX 7900 XTX emerges as the stronger GPU in this comparison, leading the RTX 5080 by a clear 13.3% in overall GPU score. This performance advantage is consistent across our tests, with the Radeon card achieving higher FPS in Earth II Vulkan (79.8 FPS vs 73.6 FPS), Mission to Earth II DX12 (101.6 FPS vs 91.7 FPS), and Earth II Landing DX12 Ultimate (89.5 FPS vs 75.7 FPS). Digging into the raw numbers, the Radeon also features a higher ALU index (803269 vs 800230) and more VRAM at 24 GB, though the RTX 5080 counters with a significantly higher bandwidth of 330 GB/s. However, with only two verified runs for each, the sample size is thin, meaning these results carry some uncertainty. Despite the Radeon's lead in component score, the RTX 5080's impressive memory bandwidth and its higher median rig gaming score (15623 vs 13074), which accounts for the entire system it was tested in, could still make it a consideration for certain setups.
Generated September 15, 2026 from the 5 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 5080