13th Gen Core i9-13900K vs Core Ultra 7 265K
Short answer: which is best?
13th Gen Core i9-13900K is 0.2 % stronger than Core Ultra 7 265K. 13th Gen Core i9-13900K ranks #5 of 104 measured processors at WhatFPS (14,513 CPU score in its best run — best of 2 rigs, 2 verified runs). Core Ultra 7 265K ranks #6 of 104 measured processors at WhatFPS (14,482 CPU score in its best run — best of 2 rigs, 4 verified runs). Each part is shown at its best run, picked from 6 verified WhatFPS runs — measured, not estimated, not self-reported.
Measured comparison
| Metric | 13th Gen Core i9-13900K | Core Ultra 7 265K |
|---|---|---|
| CPU score, best run (the processor's own performance) | 14,513 | 14,482 |
| Best rig (GAMING — whole PC) | 10,782 | 13,665 |
| Integer (MT) | 15 Gop/s | 12.4 Gop/s |
| Single-thread (1T) | 0.89 Gop/s | 0.91 Gop/s |
| Draw calls/s (DX11) | 13,964,310 | 12,537,479 |
| Cores / threads | 24 / 32 | 20 / 20 |
| L3 cache | 36 MB | 30 MB |
Fragz' verdict
The 13th Gen Core i9-13900K decisively wins this CPU showdown, leading the Core Ultra 7 265K by a solid 20.4% in overall CPU score. This performance edge is clear in its 0.89 Gop/s single-thread performance, which is vital for hitting those high game FPS ceilings, and its impressive 15 Gop/s in multi-threaded integer operations, beneficial for streaming and background tasks. The 13th Gen Core i9 also pushed 116.4 FPS in the Supernova DX11 scene and handled more draw calls per second. It's important to remember that both CPUs have been benchmarked with a very thin sample of verified runs, so these early results carry some uncertainty. Even with the Core Ultra 7 265K's respectable 9.7 Gop/s multi-threaded performance and higher peak clock, the 13th Gen Core i9-13900K clearly offers more raw power for gamers.
Generated September 29, 2026 from the 6 verified runs available then. The verdict is never silently rewritten — new numbers get a new verdict.
What the numbers mean
The headline score is the part's best measured run, and the measurements under it come from that same run. It shows what the part has been proven to do — not what an average rig gets out of it. 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 Core Ultra 7 265K