It was also a whopping 77 percent faster than the 32-thread Ryzen 9 5950X. Extreme Player stated the P-cores were very stable at 5.8GHz for Cinebench, and at 6.2GHz for CPU-Z, according (Opens in ...

Intel's new Core i9-13900KF 'Qualification Sample' (QS) ... The overclocker was able to push the P-Cores up to 6.2GHz all-core under CPU-Z and 6.8GHz all-core on Cinebench R23.

Ttesting a preproduction Core i9-13900KF QS (without graphics). ... This clock was only noticed in CPU-Z, where the processor earned 1011 points, 1 point more than i7-13700K @ 6.18 GHz.