What is the ram profile? Is it set to XMP?

Try disabling XMP and run the ram at stock to see if there’s any crashes.

Try moving both ram sticks to the second slots.

The same thing happened to me when I first got my 13900k. Heavy loads would cause crashes despite temps being fine. Turns out I had to move two of my ram sticks to the second slots for it to be stable

On the contrary, I just recently upgraded to the 13900k. Upgraded from the Intel Core 2 Duo e4500, which I kept and used for a long time.

It would’ve been better than it is today. Also IOS, would be nowhere near as buggy.

Noctua nh14S. Does a fairly good job keeping my 13900k tame for what it is.