13th Gen Core i9-13900K vs Ryzen 9 9900X
Short answer: which is best?
13th Gen Core i9-13900K is 27.5 % stronger than Ryzen 9 9900X. 13th Gen Core i9-13900K ranks #3 of 48 measured processors at WhatFPS (14,513 CPU score over 1 verified runs). Ryzen 9 9900X ranks #10 of 48 measured processors at WhatFPS (11,384 CPU score over 3 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 9 9900X |
|---|---|---|
| CPU score (the processor's own performance) | 14,513 | 11,384 |
| Best rig (GAMING — whole PC) | 8,962 | 15,624 |
| Integer (MT) | 15 Gop/s | 8.1 Gop/s |
| Single-thread (1T) | 0.89 Gop/s | 0.88 Gop/s |
| Draw calls/s (DX11) | 13,964,310 | 15,067,612 |
| Cores / threads | 24 / 32 | 6 / 12 |
| L3 cache | 36 MB | 64 MB |
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 9 9900X