How are you cooling the new CPU?

Stock 240 liquid cooling does the job pretty well. 30-40 when idle and 70 when gaming. It hit 90 in the stress test, though. No blue screen at 6.2 GHz! The KF, conversely, can't even do 5.9 with the 7000 MHz RAM.

Very nice work, my friend!

Hello I'm having a lot of issues with my i9 13900kf

First of all can you tell me on which bios you are?

Second can you tell me how you overclock it ? Through the bios ? 

Here is the issues I'm having 

Hello my aurora r15 will not keep its boost at 5.5 ghs , cpu temp is at 60 degrees though there is a edp current limit in red in hw info or throttlestop clearly saying that the current of the vrm is throttling, how is it possible knowing that I'm running everything stock ?
Clocks go down to 5.2 while throttling

Man! I also had this problem with the 13900KF. And not just that, but with some games. Kept giving me error codes. I've tried everything, just like you, and couldn't figure out what the issue was. Replacing the processor was really my last step. I didn't know what else to do. . . . Put the new processor in and guess what? PROBLEM FIXED! With the 13900KS it's all plain sailing. Aced all stress tests and benchmarks. And yeah, Dell should really update the BIOS to get the 13900KF optimized.

hmm, its interesting that in Cyberpunk your 4090 is only pulling 401 watts.  It should be like 435+, and if you turn off the power limit without overclocking it will natively pull 480 in that game.    

I am assuming this is an OEM 4090. They typically make design decisions that seem to affect the end product in a way that is not really obvious or clear, until you have the product and run some benches on it.