13th Gen Core i9-13900K vs Ryzen 5 5600X
Short answer: which is best?
13th Gen Core i9-13900K is 63.3 % stronger than Ryzen 5 5600X. 13th Gen Core i9-13900K ranks #8 of 103 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). Ryzen 5 5600X ranks #48 of 103 measured processors at WhatFPS (8,083 CPU score over 3 verified runs). The numbers are measured in 5 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | 13th Gen Core i9-13900K | Ryzen 5 5600X |
|---|---|---|
| CPU score (the processor's own performance) | 13,199 | 8,083 |
| Best rig (GAMING — whole PC) | 10,782 | 10,117 |
| Integer (MT) | 12.5 Gop/s | 5 Gop/s |
| Single-thread (1T) | 0.88 Gop/s | 0.57 Gop/s |
| Draw calls/s (DX11) | 9,342,700 | 10,374,036 |
| Cores / threads | 24 / 32 | 6 / 12 |
| L3 cache | 36 MB | 32 MB |
Fragz' verdict
The 13th Gen Core i9-13900K takes a commanding lead over the Ryzen 5 5600X, outperforming it by 63.6% in its component score. This massive difference is driven by the i9's significantly higher multi-threaded integer performance at 12.5 Gop/s compared to the Ryzen 5's 4.9 Gop/s, along with its superior single-thread performance of 0.88 Gop/s and more raw compute for draw calls. While the i9-13900K shows a clear advantage in our Supernova DX11 test at 77.9 FPS, keep in mind its results are based on a thin sample of only two verified runs. For gamers chasing absolute peak performance and high refresh rates, the i9 is the clear choice, but the Ryzen 5 5600X remains a solid processor that still ranks well at 49th overall, making it a viable option for those on a tighter budget.
Generated November 5, 2026 from the 5 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 5 5600X