13th Gen Core i9-13900K vs Core i5-14400F
Short answer: which is best?
13th Gen Core i9-13900K is 51.2 % stronger than Core i5-14400F. 13th Gen Core i9-13900K ranks #8 of 103 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). Core i5-14400F ranks #42 of 103 measured processors at WhatFPS (8,732 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 i5-14400F |
|---|---|---|
| CPU score (the processor's own performance) | 13,199 | 8,732 |
| Best rig (GAMING — whole PC) | 10,782 | 7,046 |
| Integer (MT) | 12.5 Gop/s | 6.2 Gop/s |
| Single-thread (1T) | 0.88 Gop/s | 0.67 Gop/s |
| Draw calls/s (DX11) | 9,342,700 | 10,000,536 |
| Cores / threads | 24 / 32 | 10 / 16 |
| L3 cache | 36 MB | 20 MB |
Fragz' verdict
The 13th Gen Core i9-13900K takes the lead in this CPU showdown, outperforming the Core i5-14400F by a substantial 51.2% in overall CPU score, though it’s crucial to note the thin measurement samples with two and one verified runs respectively. The i9-13900K delivers significantly higher single-thread performance at 0.88 Gop/s, which directly impacts the maximum FPS in games, and its multi-threaded integer performance of 12.5 Gop/s means better handling of background tasks and streaming. This superior performance is underpinned by its higher core and thread count, larger L3 cache, and a much higher peak clock speed of 6119 MHz compared to the i5's 4099 MHz. However, the Core i5-14400F does show surprising strength in specific gaming metrics, delivering more draw calls per second and achieving a higher Supernova DX11 FPS at 83.4 compared to the i9’s 77.9. For gamers building a high-end rig who need top-tier processing power across the board, the i9-13900K is the clear choice, but if you're on a tighter budget and prioritize specific DX11 titles where the i5 can shine, it remains a viable option.
Generated October 31, 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 i5-14400F