Radeon RX 7900 XTX vs RTX 3080 Ti
Short answer: which is best?
Radeon RX 7900 XTX is 82.7 % stronger than RTX 3080 Ti. Radeon RX 7900 XTX ranks #2 of 68 measured graphics cards at WhatFPS (18,924 GPU score over 2 verified runs). RTX 3080 Ti ranks #14 of 68 measured graphics cards at WhatFPS (10,358 GPU score over 7 verified runs). The numbers are measured in 9 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | Radeon RX 7900 XTX | RTX 3080 Ti |
|---|---|---|
| GPU score (the card's own performance) | 18,924 | 10,358 |
| Best rig (GAMING — whole PC) | 13,434 | 11,289 |
| Earth II (Vulkan) | 79.8 FPS | 43 FPS |
| Mission to Earth II (DX12) | 101.6 FPS | 55.2 FPS |
| Earth II Landing (DX12 Ultimate) | 89.5 FPS | 49.8 FPS |
| Supernova (DX11) | 41.7 FPS | 107.7 FPS |
| Memory bandwidth | 122 GB/s | 291 GB/s |
| VRAM | 24 GB | 12 GB |
| Ray tracing | Yes | Yes |
Fragz' verdict
The Radeon RX 7900 XTX dominates this comparison, achieving an 88% lead in GPU score over the RTX 3080 Ti. This translates to significantly higher frame rates across the board, with the Radeon hitting 79.8 FPS in Earth II Vulkan and 101.6 FPS in Mission to Earth II DX12, compared to the RTX's 42.4 FPS and 53.7 FPS respectively. The Radeon's superior raw compute power, reflected in its 803269 ALU index and 24 GB of VRAM, clearly outpaces the RTX 3080 Ti's 497242 ALU index and 12 GB VRAM, despite the RTX's higher memory bandwidth of 290 GB/s. For gamers, this means a much smoother experience in demanding titles, though it's important to remember the Radeon's data comes from a thin sample of only two verified runs. While the RTX 3080 Ti still offers modern features like ray tracing, its performance is simply not competitive with the Radeon in these benchmarks.
Generated September 22, 2026 from the 9 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 3080 Ti