Core Ultra 9 285K vs 13th Gen Core i9-13900K
Short answer: which is best?
Core Ultra 9 285K is 17.6 % stronger than 13th Gen Core i9-13900K. Core Ultra 9 285K ranks #2 of 67 measured processors at WhatFPS (15,519 CPU score over 1 verified runs). 13th Gen Core i9-13900K ranks #7 of 67 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). The numbers are measured in 3 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | Core Ultra 9 285K | 13th Gen Core i9-13900K |
|---|---|---|
| CPU score (the processor's own performance) | 15,519 | 13,199 |
| Best rig (GAMING — whole PC) | 11,994 | 10,782 |
| Integer (MT) | 12.7 Gop/s | 12.5 Gop/s |
| Single-thread (1T) | 0.95 Gop/s | 0.88 Gop/s |
| Draw calls/s (DX11) | 11,963,538 | 9,342,700 |
| Cores / threads | 24 / 24 | 24 / 32 |
| L3 cache | 36 MB | 36 MB |
Fragz' verdict
The Core Ultra 9 285K edges out the 13th Gen Core i9-13900K in this comparison, posting a 6.9 percent higher CPU score, though this early data is based on a single verified run for each chip. The Core Ultra 9 285K achieves higher single-thread performance at 0.95 Gop/s and a slightly higher peak clock of 5334 MHz, which often translates to a higher FPS ceiling in games. However, the 13th Gen Core i9-13900K demonstrates superior multi-threaded integer operations at 15 Gop/s, delivers more draw calls per second, and achieves higher Supernova DX11 FPS. For gamers, while the Core Ultra 9 285K might offer a slight edge in raw single-core speed, the 13th Gen Core i9-13900K, with its 32 threads compared to 24, remains a very strong option for titles or background tasks that can leverage its robust multi-threaded raw compute and DX11 capabilities.
Generated September 29, 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 Core Ultra 9 285K · All measurements for 13th Gen Core i9-13900K