13th Gen Core i9-13900K vs Ryzen 5 2600X Six-Core Processor
Short answer: which is best?
13th Gen Core i9-13900K is 132.7 % stronger than Ryzen 5 2600X Six-Core Processor. 13th Gen Core i9-13900K ranks #8 of 103 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). Ryzen 5 2600X Six-Core Processor ranks #78 of 103 measured processors at WhatFPS (5,673 CPU score over 1 verified runs). The numbers are measured in 3 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | 13th Gen Core i9-13900K | Ryzen 5 2600X Six-Core Processor |
|---|---|---|
| CPU score (the processor's own performance) | 13,199 | 5,673 |
| Best rig (GAMING — whole PC) | 10,782 | 6,746 |
| Integer (MT) | 12.5 Gop/s | 2.6 Gop/s |
| Single-thread (1T) | 0.88 Gop/s | 0.42 Gop/s |
| Draw calls/s (DX11) | 9,342,700 | 2,546,566 |
| Cores / threads | 24 / 32 | 6 / 12 |
| L3 cache | 36 MB | 16 MB |
Fragz' verdict
The 13th Gen Core i9-13900K takes a commanding lead in this comparison, outperforming the Ryzen 5 2600X Six-Core Processor by a substantial 132.7% in overall CPU score, though we note the sample size is thin with only two verified runs for the Core i9 and just one for the Ryzen. This performance gap is evident across the board, with the Core i9-13900K delivering significantly higher single-thread performance at 0.88 Gop/s compared to the Ryzen's 0.42 Gop/s, and crushing multi-threaded tasks with 12.5 Gop/s versus 2.6 Gop/s. For gamers, this directly translates into a much smoother experience, as seen in the Supernova DX11 scene where the Core i9-13900K hit 77.9 FPS versus the Ryzen's 21.2 FPS, alongside a massive advantage in draw calls per second. Higher single-thread performance usually sets the FPS ceiling in games, while the multi-threaded strength helps with background tasks and streaming. While the Ryzen 5 2600X Six-Core Processor was a solid chip in its time, its lower core count, slower clock speeds, and reduced L3 cache mean it simply cannot keep up with modern gaming demands, making it a viable option only if you already own one and are on an extreme budget.
Generated October 31, 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 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 2600X Six-Core Processor