7700k temps high

[y1o0b0r4e6k0ib]

So I had my 7700k clocked at 4.7ghz at 1.220v and I noticed my temps were gradually getting higher the past few months. When I first overclocked it, the temps were around mid 70's to low 80's in Aida64 and I was contempt with that. Last night(4/23) it was thermal throttling. I dropped the voltage down to 1.215 and the temps were stable in the low 90's..

I went into the bios and reset the overclock and lowered the voltage even further and the temps were, at idle, 40-50C.. What the heck's going on?

I tried everything I could think of, looked on many forums, until I thought of one last thing: the thermal paste. I took off my AIO(h115i) and saw the thermal paste wasn't spread evenly and it looked like it dried up a bit, with splotches of paste covering about 85% of the cpu. The paste I use it Arctic Silver 5.

Does anyone have any thoughts on why it did that? Did it happen because the last time I cleaned off the paste and replaced it I just used a paper towel?

I've since cleaned the old paste off with 91% isopropyl alcohol and applied new paste. The temps were, at idle(stock clock), mid 30's. I now have it overclocked at 4.8ghz at 1.225v and the temps stay around mid 70's to mid 80's in Aida64.

My build:
motherboard: Gigabyte z170x G1 Gaming 7(rev 1.0) f22m bios
cpu: 7700k
cpu cooler: Corsair h115i
ram: corsair vengeance LPX 3000 C16
gpu: (2) EVGA 1070 FTW in SLI
psu: EVGA 850w 80+ Platinum
storage: Samsung 850 evo 250 ssd, 2tb Seagate Firecuda SSHD
case: Phantex Enthoo Pro
some Noctua fans

 

[norcalsc]

Wierd I have same setup as you I never Crack 60c. Maybe you have air bubble in line or pump malfunction

 

[y1o0b0r4e6k0ib]

Wierd I have same setup as you I never Crack 60c. Maybe you have air bubble in line or pump malfunction

I don't think that's it. My 6600k ran just fine at 4.6ghz 1.335v with temps never going in the 70's. I also have Corsair Link open when testing to monitor the AIO.

 

[theking2]

So I had my 7700k clocked at 4.7ghz at 1.220v and I noticed my temps were gradually getting higher the past few months. When I first overclocked it, the temps were around mid 70's to low 80's in Aida64 and I was contempt with that. Last night(4/23) it was thermal throttling. I dropped the voltage down to 1.215 and the temps were stable in the low 90's..

I have a system with the same mobo as you the GA-z170X Gaming 7. At the time I build another pc with the i7-7700K based around Asus Maximus IX Apex. As constant load I run the same BOINC on both systems. One other difference the Gigabyte version has a Thermalright Macho 120SBM the Asus a Scyth Mugen 5.

The Gigabyte runs constantly high temps and thermal throttling, the Asus runs around 80 degrees C.
I blamed the cooler but it could just as well be the motherboard.