13th Gen Core i9-13900K vs Core i7-6700
Short answer: which is best?
13th Gen Core i9-13900K is 216.1 % stronger than Core i7-6700. 13th Gen Core i9-13900K ranks #8 of 103 measured processors at WhatFPS (13,199 CPU score over 2 verified runs). Core i7-6700 ranks #92 of 103 measured processors at WhatFPS (4,175 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 i7-6700 |
|---|---|---|
| CPU score (the processor's own performance) | 13,199 | 4,175 |
| Best rig (GAMING — whole PC) | 10,782 | 2,861 |
| Integer (MT) | 12.5 Gop/s | 1.9 Gop/s |
| Single-thread (1T) | 0.88 Gop/s | 0.37 Gop/s |
| Draw calls/s (DX11) | 9,342,700 | 3,643,917 |
| Cores / threads | 24 / 32 | 4 / 8 |
| L3 cache | 36 MB | 8 MB |
Fragz' verdict
The 13th Gen Core i9-13900K is the clear winner in this CPU comparison, leading the Core i7-6700 by an impressive 216.1% in overall CPU score, though we must note the sample size is thin with only two verified runs for the i9 and one for the i7. This massive performance gap is evident across all CPU-centric benchmarks: the i9-13900K delivers 12.5 Gop/s in multi-threaded integer operations compared to 1.9 Gop/s, and its single-thread performance is 0.88 Gop/s against 0.37 Gop/s from the i7, which directly translates to a much higher FPS ceiling in games. The i9 also boasts a significantly higher peak clock of 6119 MHz, 24 cores, and 36 MB of L3 cache, allowing it to push 9.3 million draw calls per second and achieve 77.9 FPS in the Supernova DX11 scene, far outperforming the i7's 3.6 million draw calls and 30.4 FPS. For gamers seeking top-tier performance and future-proofing, the 13th Gen Core i9-13900K is the obvious choice due to its superior raw compute and thread count. While the Core i7-6700 is clearly outclassed, it still manages to run the Supernova DX11 scene at 30.4 FPS, meaning it could still be a viable option for extremely budget-conscious users playing older titles, but will struggle severely with modern demanding games.
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 i7-6700