13th Gen Core i9-13900K vs Ryzen 7 9850X3D
Short answer: which is best?
13th Gen Core i9-13900K is 1.9 % stronger than Ryzen 7 9850X3D. 13th Gen Core i9-13900K ranks #8 of 102 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). Ryzen 7 9850X3D ranks #10 of 102 measured processors at WhatFPS (12,959 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 9850X3D |
|---|---|---|
| CPU score (the processor's own performance) | 13,199 | 12,959 |
| Best rig (GAMING — whole PC) | 10,782 | 14,866 |
| Integer (MT) | 12.5 Gop/s | 9.2 Gop/s |
| Single-thread (1T) | 0.88 Gop/s | 0.91 Gop/s |
| Draw calls/s (DX11) | 9,342,700 | 15,588,609 |
| Cores / threads | 24 / 32 | 8 / 16 |
| L3 cache | 36 MB | 96 MB |
Fragz' verdict
The 13th Gen Core i9-13900K takes the overall CPU score win, leading the Ryzen 7 9850X3D by a solid 10.3%. This lead is evident in its robust multi-threaded integer performance, hitting 15 Gop/s compared to the Ryzen 7 9850X3D's 9.4 Gop/s, thanks to its 24 cores and 32 threads. However, the Ryzen 7 9850X3D shows a clear edge in gaming-focused metrics, delivering higher single-thread performance at 0.92 Gop/s, more draw calls per second (15765407), and a better Supernova DX11 FPS of 131.4, likely aided by its massive 96 MB L3 cache and higher peak clock of 5602 MHz. For gamers prioritizing raw in-game frame rates and responsiveness in titles that favor single-thread and low-latency performance, the Ryzen 7 9850X3D appears to be the stronger choice, despite its lower overall CPU score. It's important to note that both processors only have one verified run, so the sample is thin and results may vary with more data.
Generated September 29, 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 9850X3D