Ryzen 9 9950X3D vs Core i9-9900K
Short answer: which is best?
Ryzen 9 9950X3D is 80.6 % stronger than Core i9-9900K. Ryzen 9 9950X3D ranks #1 of 69 measured processors at WhatFPS (16,059 CPU score over 6 verified runs). Core i9-9900K ranks #30 of 69 measured processors at WhatFPS (8,893 CPU score over 1 verified runs). The numbers are measured in 7 verified WhatFPS runs — not estimated, not self-reported.
Measured comparison
| Metric | Ryzen 9 9950X3D | Core i9-9900K |
|---|---|---|
| CPU score (the processor's own performance) | 16,059 | 8,893 |
| Best rig (GAMING — whole PC) | 21,848 | 8,453 |
| Integer (MT) | 15.2 Gop/s | 6.5 Gop/s |
| Single-thread (1T) | 0.92 Gop/s | 0.59 Gop/s |
| Draw calls/s (DX11) | 16,365,486 | 9,269,393 |
| Cores / threads | 16 / 32 | 8 / 16 |
| L3 cache | 128 MB | 16 MB |
Fragz' verdict
The Ryzen 9 9950X3D dominates this comparison, leading the Core i9-9900K by a massive 78.9% in overall CPU score and securing the top rank among all measured CPUs. This impressive lead is evident across the board, with the Ryzen 9 9950X3D delivering 14.9 Gop/s in integer multi-threaded performance against the Core i9-9900K's 6.5 Gop/s, and a stronger 0.92 Gop/s in single-thread work compared to 0.59 Gop/s. Its significantly higher draw calls per second at 15,763,768 and 131.4 FPS in Supernova DX11, supported by 16 cores, 32 threads, and a massive 128 MB of L3 cache, point to a superior gaming and multi-tasking experience. For a gamer, this means much higher potential FPS and smoother background operations, making the Ryzen 9 9950X3D the prime choice for a high-performance rig. The Core i9-9900K, represented by only a single verified run, still offers 8 cores and 16 threads, but it simply cannot compete with the modern horsepower of the Ryzen 9 9950X3D.
Generated September 24, 2026 from the 7 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 Ryzen 9 9950X3D · All measurements for Core i9-9900K