Radeon RX 7900 XTX vs Arc B580 Graphics
Short answer: which is best?
Radeon RX 7900 XTX is 264.8 % stronger than Arc B580 Graphics. Radeon RX 7900 XTX ranks #2 of 67 measured graphics cards at WhatFPS (18,924 GPU score over 2 verified runs). Arc B580 Graphics ranks #30 of 67 measured graphics cards at WhatFPS (5,187 GPU score over 1 verified runs). The numbers are measured in 3 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | Radeon RX 7900 XTX | Arc B580 Graphics |
|---|---|---|
| GPU score (the card's own performance) | 18,924 | 5,187 |
| Best rig (GAMING — whole PC) | 13,434 | 5,621 |
| Earth II (Vulkan) | 79.8 FPS | 22.9 FPS |
| Mission to Earth II (DX12) | 101.6 FPS | 29.8 FPS |
| Earth II Landing (DX12 Ultimate) | 89.5 FPS | 22.7 FPS |
| Supernova (DX11) | 41.7 FPS | 11.7 FPS |
| Memory bandwidth | 122 GB/s | 64 GB/s |
| VRAM | 24 GB | 12 GB |
| Ray tracing | Yes | Yes |
Fragz' verdict
"Radeon RX 7900 XTX" is the undisputed winner in this GPU showdown, leading "Arc B580 Graphics" by a massive 264.8% in overall GPU score. This performance gap is stark in our gaming benchmarks, with the "Radeon RX 7900 XTX" 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), while the "Arc B580 Graphics" managed 22.9, 29.8, and 22.7 FPS respectively. Beyond frame rates, the "Radeon RX 7900 XTX" also boasts significantly higher raw compute with an ALU index of 803269, double the memory bandwidth at 122 GB/s, and twice the VRAM with 24 GB compared to the "Arc B580 Graphics'" 12 GB. It's crucial to note that both cards have very few verified runs—one for the "Arc B580 Graphics" and two for the "Radeon RX 7900 XTX"—meaning these results come from a thin sample and should be considered with caution. Based on these numbers, the "Radeon RX 7900 XTX" offers a vastly superior gaming experience, making it the clear choice for high-performance gaming.
Generated October 29, 2026 from the 3 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 Arc B580 Graphics