13th Gen Core i9-13900K vs Ryzen 7 9800X3D
Short answer: which is best?
13th Gen Core i9-13900K is 3.9 % stronger than Ryzen 7 9800X3D. 13th Gen Core i9-13900K ranks #7 of 67 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). Ryzen 7 9800X3D ranks #9 of 67 measured processors at WhatFPS (12,707 CPU score over 7 verified runs). The numbers are measured in 9 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | 13th Gen Core i9-13900K | Ryzen 7 9800X3D |
|---|---|---|
| CPU score (the processor's own performance) | 13,199 | 12,707 |
| Best rig (GAMING — whole PC) | 10,782 | 15,290 |
| Integer (MT) | 12.5 Gop/s | 9.5 Gop/s |
| Single-thread (1T) | 0.88 Gop/s | 0.87 Gop/s |
| Draw calls/s (DX11) | 9,342,700 | 10,400,088 |
| Cores / threads | 24 / 32 | 8 / 16 |
| L3 cache | 36 MB | 96 MB |
Fragz' verdict
The 13th Gen Core i9-13900K takes the lead in this CPU comparison, outscoring the Ryzen 7 9800X3D by 15.2% in overall component performance, though it should be noted the 13900K's data comes from a single verified run. This advantage is largely driven by its superior multi-threaded integer performance, hitting 15 Gop/s compared to the Ryzen's 9.3 Gop/s, alongside a higher draw call rate of 13.9 million per second. Gamers can expect better handling of background tasks and game compilation, with the 13900K also showing a strong lead in the Supernova DX11 scene at 116.4 FPS. While the 13900K also has a slight edge in single-thread performance, the Ryzen 7 9800X3D still offers competitive single-thread numbers and a significantly larger 96 MB L3 cache, which can be a strong factor for specific game titles that benefit from high cache memory, making it a viable choice despite the overall score difference.
Generated October 1, 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 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 9800X3D