Mine is not stable at stock wattage. I expect a chip to be stable at that. If it is not I will not accept that chip. Have you tried running Cinebench R15? This one always crashes on my 14900k’s. No matter what chip. I am starting to think that I have a bad motherboard. But my 13900k worked without a problem. (z690 Aorus Master)

I have got the exact same issues. I am kind of loosing my mind here.

I also had the problem with a 14900k, ordered another 14900kf. No problems with this cpu. It seems there are more doa cpus out there with 14gen.