13th Gen Core i9-13900K vs Core Ultra X7 358H
Short answer: which is best?
13th Gen Core i9-13900K is 24.8 % stronger than Core Ultra X7 358H. 13th Gen Core i9-13900K ranks #8 of 103 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). Core Ultra X7 358H ranks #23 of 103 measured processors at WhatFPS (10,578 CPU score over 1 verified runs). The numbers are measured in 3 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | 13th Gen Core i9-13900K | Core Ultra X7 358H |
|---|---|---|
| CPU score (the processor's own performance) | 13,199 | 10,578 |
| Best rig (GAMING — whole PC) | 10,782 | 4,693 |
| Integer (MT) | 12.5 Gop/s | 6.4 Gop/s |
| Single-thread (1T) | 0.88 Gop/s | 0.78 Gop/s |
| Draw calls/s (DX11) | 9,342,700 | 3,294,083 |
| Cores / threads | 24 / 32 | 16 / 16 |
| L3 cache | 36 MB | 18 MB |
Fragz' verdict
The 13th Gen Core i9-13900K handily wins this round, outscoring the Core Ultra X7 358H by a significant 24.8% in overall CPU performance. This lead is clear in multi-threaded tasks, where the i9-13900K pushes 12.5 Gop/s in integer operations compared to the Ultra X7's 6.4 Gop/s, alongside a stronger single-thread performance of 0.88 Gop/s, which directly translates to a much higher 77.9 FPS in the Supernova DX11 test versus 27.5 FPS. The i9-13900K's 24 cores and 32 threads also provide a substantial advantage over the Ultra X7's 16 cores and 16 threads, handling more background load and concurrent processes. However, it's important to remember that these results are based on a thin sample, with only two verified runs for the i9-13900K and just one for the Core Ultra X7 358H. While the Core Ultra X7 358H delivers lower scores, its high peak clock of 8899 MHz and respectable rank of 22 out of 103 suggest it could still be a decent performer for systems where peak raw power isn't the absolute top priority.
Generated November 7, 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 13th Gen Core i9-13900K · All measurements for Core Ultra X7 358H