Radeon RX 7900 XTX vs RTX 4070
Short answer: which is best?
Radeon RX 7900 XTX is 120 % stronger than RTX 4070. Radeon RX 7900 XTX ranks #2 of 67 measured graphics cards at WhatFPS (18,924 GPU score over 2 verified runs). RTX 4070 ranks #18 of 67 measured graphics cards at WhatFPS (8,601 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 4070 |
|---|---|---|
| GPU score (the card's own performance) | 18,924 | 8,601 |
| Best rig (GAMING — whole PC) | 13,434 | 10,156 |
| Earth II (Vulkan) | 79.8 FPS | 35 FPS |
| Mission to Earth II (DX12) | 101.6 FPS | 44.7 FPS |
| Earth II Landing (DX12 Ultimate) | 89.5 FPS | 42.6 FPS |
| Supernova (DX11) | 41.7 FPS | 105.6 FPS |
| Memory bandwidth | 122 GB/s | 135 GB/s |
| VRAM | 24 GB | 12 GB |
| Ray tracing | Yes | Yes |
Fragz' verdict
The Radeon RX 7900 XTX is the dominant performer in this comparison, leading the RTX 4070 by an impressive 122.9% in GPU score, though both cards currently have a thin sample of only 2 verified runs. This translates to substantially higher framerates across our tests, with the Radeon card hitting 79.8 FPS in Earth II Vulkan, 101.6 FPS in Mission to Earth II DX12, and 89.5 FPS in Earth II Landing DX12 Ultimate, far surpassing the RTX 4070's 34.3, 44.1, and 42.3 FPS respectively. Under the hood, the Radeon RX 7900 XTX boasts significantly higher raw compute with an ALU index of 803269, compared to the RTX 4070's 437475, and offers double the VRAM at 24 GB versus 12 GB. For gamers, this means the Radeon RX 7900 XTX delivers a much smoother and more capable high-fidelity experience, particularly for demanding titles and resolutions. While the RTX 4070, with its 2820 MHz peak clock, still supports features like Ray Tracing, Mesh Shaders, and VRS, its overall performance and rank of 13th compared to the 7900 XTX's 2nd clearly place it in a different performance class.
Generated September 30, 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 4070