Intel i9 defect questions

Have any of you dealt with one of the 13th or 14th gen i9's that have issues with power limits?

I am asking if after rectifying the cpu issue with a replacement does everything seem fine? This crap has manifested itself in my machine over the past year as not accepting memory modules and not running them at the correct speeds to high cpu temps to crashing to now it falls to post most of the time. So I've replaced the motherboard and memory twice trying to rectify. Once I get a new cpu is there any chance that the old cpu actually damaged the motherboard and memory or should or just click together and work perfectly? Just wondering what your experience has been dealing with this issue.

Right now I've got an i5 14600kf coming to use as a temporary cpu while rma'ing my i9. Am i risking damage to it by putting it in the z790 motherboard that had the defective i9 in it for a year?