I recently bought a used I7-6700k, but I have been having some trouble with its temperature and the mounting, the two problems could be related.
First, the mounting, After changing the CPU, and having no problems doing so, I start the computer, the LEDs and fans turn on, but the monitor dosent recive any signal, After Reading this post: https://forums.tomshardware.com/threads/problem-with-new-cpu.3351778/
I First tried to run the PC without the cooler, It Turner on, so I immediatly turned It Off, and tried to screw in the cooler less thightily, and It worked.
So, I Am Using am the Enermax Liqmax II 120S as cooling, and I never had problems with my I5-6500, It usualy never went higher then 45C° or so.
With the I7 at 4GHz, its around 35 at idle, spiking to 60 when opening programs and such,and picks at 85 under load,staying at around 82.
I olso tried to overclock It, I followed this old video
as a guide, I tried 4.5 MGhz, and it quickly reached 100C° running folding at home (I know I should use a proper stress test, but for now I am only concerned with the temperature) I tried 4.2 and had very similar resulsts,It Just took more time, then 4.1, and It was at around 92 After 10 minutes.
The all time I kept the voltage setting on adaptive mode.
From what I have seen, this temperatures are not normal, but I couldent confirm It in any way, so I tought about possibile reasons, and of cours, I was thingking It might be that now the cooler isent tightend enough, (I tried to screw It in as tight as a I could befour It stoped booting)
Could the CPU be defective in some way, that dosent allow me to get the water block on tight enough?
I olso tought It could be the termale paste, I used the leftovers from the One that was included with the AIO, there was enough of It, the problem Is that It as been sitting there for at least 3 years, could It have gone bad or something like that?
Of course, It could be lack of airflow, but even dough my system Is packed preatty tight, I have a couple of intake fans and there are only a couple of cables in front of the radiator.
Motherboard: Asus Z170I
RAM: 4x2Gb 2400MHz Hyper X Fury
AIO:Enermax liqmax II 120s
Case: Itek spacebox.