Core Ultra 7 265K vs 13th Gen Core i9-13900K
Short answer: which is best?
Core Ultra 7 265K is 3.8 % stronger than 13th Gen Core i9-13900K. Core Ultra 7 265K ranks #5 of 65 measured processors at WhatFPS (13,700 CPU score over 2 verified runs). 13th Gen Core i9-13900K ranks #7 of 65 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). The numbers are measured in 4 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | Core Ultra 7 265K | 13th Gen Core i9-13900K |
|---|---|---|
| CPU score (the processor's own performance) | 13,700 | 13,199 |
| Best rig (GAMING — whole PC) | 13,665 | 10,782 |
| Integer (MT) | 11.5 Gop/s | 12.5 Gop/s |
| Single-thread (1T) | 0.87 Gop/s | 0.88 Gop/s |
| Draw calls/s (DX11) | 11,952,062 | 9,342,700 |
| Cores / threads | 20 / 20 | 24 / 32 |
| L3 cache | 30 MB | 36 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 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 Core Ultra 7 265K · All measurements for 13th Gen Core i9-13900K