13th Gen Core i9-13900K vs Ryzen 7 5800XT
Short answer: which is best?
13th Gen Core i9-13900K is 37.4 % stronger than Ryzen 7 5800XT. 13th Gen Core i9-13900K ranks #8 of 103 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). Ryzen 7 5800XT ranks #32 of 103 measured processors at WhatFPS (9,603 CPU score over 2 verified runs). The numbers are measured in 4 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | 13th Gen Core i9-13900K | Ryzen 7 5800XT |
|---|---|---|
| CPU score (the processor's own performance) | 13,199 | 9,603 |
| Best rig (GAMING — whole PC) | 10,782 | 10,580 |
| Integer (MT) | 12.5 Gop/s | 7.4 Gop/s |
| Single-thread (1T) | 0.88 Gop/s | 0.59 Gop/s |
| Draw calls/s (DX11) | 9,342,700 | 7,372,126 |
| Cores / threads | 24 / 32 | 8 / 16 |
| L3 cache | 36 MB | 32 MB |
Fragz' verdict
The 13th Gen Core i9-13900K is the clear winner in this CPU showdown, leading the Ryzen 7 5800XT by a substantial 37.4% in overall CPU score. However, with only two verified runs for each processor, these results should be viewed with a thin sample size in mind. The Core i9-13900K shows superior single-thread performance at 0.88 Gop/s and a higher peak clock of 6119 MHz, which directly translates to better responsiveness and higher frame rates in games that rely on a single core. This is further supported by its significantly higher draw calls per second of 9,342,700 and its 77.9 FPS in the Supernova DX11 scene, outperforming the Ryzen 7 5800XT's 61.5 FPS. While the Ryzen 7 5800XT offers a solid 7.4 Gop/s in multi-threaded integer operations, the 13th Gen Core i9-13900K stands out as the stronger choice for top-tier gaming performance.
Generated October 31, 2026 from the 4 verified runs available then. The verdict is never silently rewritten — new numbers get a new verdict.
What the numbers mean
The CPU score is the processor's own performance — that is what we rank on. GAMING is the whole rig's score in the best PC we measured the processor in, and leans heavily on the graphics card. A strong processor in a weak PC gets a low GAMING score without being worse. 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 13th Gen Core i9-13900K · All measurements for Ryzen 7 5800XT