RTX 5090 vs Arc B390 GPU
Short answer: which is best?
RTX 5090 is 842.2 % stronger than Arc B390 GPU. RTX 5090 ranks #1 of 74 measured graphics cards at WhatFPS (28,389 GPU score over 6 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 7 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | RTX 5090 | Arc B390 GPU |
|---|---|---|
| GPU score (the card's own performance) | 28,389 | 3,013 |
| Best rig (GAMING — whole PC) | 21,848 | 4,693 |
| Earth II (Vulkan) | 134.1 FPS | 12.2 FPS |
| Mission to Earth II (DX12) | 174.4 FPS | 16.8 FPS |
| Earth II Landing (DX12 Ultimate) | 113.8 FPS | 14.3 FPS |
| Supernova (DX11) | 115.2 FPS | 27.5 FPS |
| Memory bandwidth | 698 GB/s | 21 GB/s |
| VRAM | 31 GB | — |
| Ray tracing | Yes | Yes |
Fragz' verdict
The RTX 5090 is the clear winner in this comparison, leading the Arc B390 GPU by an astounding 831.9% in overall GPU score, though the Arc B390 GPU's single verified run suggests a thin sample. This massive performance gap is evident across all our GPU benchmarks, with the RTX 5090 delivering triple-digit framerates like 132.8 FPS in Earth II Vulkan and 171.4 FPS in Mission to Earth II DX12, compared to the Arc B390 GPU's struggle to reach 20 FPS in any scene. The RTX 5090 also boasts significantly higher raw compute with an ALU index of 1020560, vastly superior memory bandwidth at 660 GB/s, and a substantial 31 GB of VRAM, while the Arc B390 GPU reports 0 GB of VRAM. For gamers, this translates to the RTX 5090 providing a premium experience with smooth framerates at high resolutions and settings. Given the numbers, there is no scenario where the Arc B390 GPU would be the preferred choice for gaming.
Generated October 29, 2026 from the 7 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 5090 · All measurements for Arc B390 GPU