RTX 5080 vs RTX 4080
Short answer: which is best?
RTX 5080 is 13.1 % stronger than RTX 4080. RTX 5080 ranks #3 of 67 measured graphics cards at WhatFPS (16,422 GPU score over 4 verified runs). RTX 4080 ranks #4 of 67 measured graphics cards at WhatFPS (14,521 GPU score over 5 verified runs). The numbers are measured in 9 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | RTX 5080 | RTX 4080 |
|---|---|---|
| GPU score (the card's own performance) | 16,422 | 14,521 |
| Best rig (GAMING — whole PC) | 15,624 | 14,765 |
| Earth II (Vulkan) | 72.7 FPS | 63.1 FPS |
| Mission to Earth II (DX12) | 87.2 FPS | 78.4 FPS |
| Earth II Landing (DX12 Ultimate) | 75.9 FPS | 67.1 FPS |
| Supernova (DX11) | 128.9 FPS | 105.7 FPS |
| Memory bandwidth | 326 GB/s | 204 GB/s |
| VRAM | 16 GB | 16 GB |
| Ray tracing | Yes | Yes |
Fragz' verdict
The RTX 5080 takes a decisive lead in this comparison, outperforming the RTX 4080 by 15.2% in overall GPU score. While its sample size of two verified runs is thin, the RTX 5080 consistently delivers higher frame rates, reaching 73.6 FPS in Earth II (Vulkan) and 91.7 FPS in Mission to Earth II (DX12) compared to the RTX 4080's 62.9 FPS and 77.9 FPS. This superior performance is backed by a significantly higher raw compute with an ALU index of 800230 and 330 GB/s of memory bandwidth, dwarfing the RTX 4080's 539839 ALU index and 195 GB/s. For gamers seeking the absolute best performance in our tests, the RTX 5080 is the stronger choice, but the RTX 4080 still offers solid numbers, especially for those not chasing every last frame.
Generated September 29, 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 RTX 5080 · All measurements for RTX 4080