RTX 4080 SUPER vs Arc B390 GPU
Short answer: which is best?
RTX 4080 SUPER is 379.9 % stronger than Arc B390 GPU. RTX 4080 SUPER ranks #5 of 74 measured graphics cards at WhatFPS (14,460 GPU score over 2 verified runs). Arc B390 GPU ranks #51 of 74 measured graphics cards at WhatFPS (3,013 GPU score over 1 verified runs). The numbers are measured in 3 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | RTX 4080 SUPER | Arc B390 GPU |
|---|---|---|
| GPU score (the card's own performance) | 14,460 | 3,013 |
| Best rig (GAMING — whole PC) | 13,665 | 4,693 |
| Earth II (Vulkan) | 62.6 FPS | 12.2 FPS |
| Mission to Earth II (DX12) | 79.2 FPS | 16.8 FPS |
| Earth II Landing (DX12 Ultimate) | 66.3 FPS | 14.3 FPS |
| Supernova (DX11) | 99.7 FPS | 27.5 FPS |
| Memory bandwidth | 163 GB/s | 21 GB/s |
| VRAM | 16 GB | — |
| Ray tracing | Yes | Yes |
Fragz' verdict
The RTX 4080 SUPER is the clear winner in this comparison, leading the Arc B390 GPU by a massive 361.3% in GPU score, though both cards have thin sample sizes with only one or two verified runs. This huge performance gap is evident across all our GPU benchmarks; for instance, the RTX 4080 SUPER hit 60.5 FPS in Earth II Vulkan and 76.6 FPS in Mission to Earth II DX12, while the Arc B390 GPU managed only 12.2 FPS and 16.8 FPS respectively. This means the RTX 4080 SUPER delivers a smooth, high-frame-rate gaming experience where the Arc B390 GPU struggles to reach playable frame rates. The RTX 4080 SUPER also boasts a significantly higher ALU index of 488299 compared to 220037, a much larger memory bandwidth of 189 GB/s versus 21 GB/s, and a substantial 16 GB of VRAM, whereas the Arc B390 GPU reported 0 GB. For any serious gaming, the RTX 4080 SUPER is overwhelmingly the superior choice, as the Arc B390 GPU's performance and VRAM limitation would severely hinder gameplay.
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 RTX 4080 SUPER · All measurements for Arc B390 GPU