CPU Slowly Overheats on Idle

Nooby_

Prominent
May 5, 2017
12
0
510
CPU: AMD FX-9590
GPU: GTX 970
16 GB RAM
Thermal Paste: Arctic MX4

So a few months back I started having overheating issues with my PC. This would happen usually when Im gaming. I was dumb and neglected to find the problem, and would just restart it and it would work fine. As the problem became more common I looked and found that a fan for my liquid cooling system had died and that it needed to be replaced, so I replaced it. Things seemed fine after that but now my PC will just overheat on idle.

I tried using canned air to clean out all of the dust, reapplying thermal paste and fully cleaning out all of the dust out of the liquid cooler using water. All of these things made big improvements on the temperature but the problem remains. I have checked and the fans are pointing inthe right directions and are working fine. As of now if I start up my PC the temperatures will be fine, but my processor will slowly climb over 5-10 mins from a temp in the low 40's to the high 50's, at which point I will just turn it off to avoid overheating (all the other temps remain unchanged pretty much). I was thinking maybe overheating it a bunch might've caused permanent damage somewhere. I checked the processor and see no evidence of burning there but the liquid cooler does seem to have some signs as there is a small spot on the bottom where the metal has turned white and some of the thin metal things are bent a little.

Does anybody have any ideas on what to do to fix this? I feel like I have tried everything and could really use some help. Thanks!
 
Solution
Sorry mate but a micro case will not work unless your prepared to build an Open loop cooling system.

The Gigabyte 990fxa-ud3 r5 is a decent MB but not for the FX-9590 being the beast of a processor that it is. Limited OCing capability thru Bios and VRMs get hot.
The FX-9590 does require efficient cooling so first check your AIO liquid cooler. RPM of the pump and compare the radiator inlet pipe temp to outlet. High 50s Celsius is high at idle. The white oxidization if on the rad is a concern and I hope it's not a tiny leak. This could introduce air into the system and reduce efficiency and in time could leak onto the MB so check it out.
Which AIO are you using and how old is it.?
Arctic MX4 is a good thermal paste and should not be the issue if applied correctly.?
Also, Have you OCed your FX-9590 at all.?
 


The RPM was around 1400-1450 and the heat of both pipes felt the same. Im not sure what the AIO is, it came with the system and has no markings on it so it is probably a fairly cheap one, Ive had it only around a year. I havent been OCing my CPU at all. While doing this I also noticed my PC temp would stabalize a bit in the 50s if the case was off so maybe something to do with the fans? They are all running fast and the fans on the cpu both blow into the rad not away. Im unsure about the white oxidation, I dont think it is causing a leak because when I cleaned the cooler nothing was leaking out and I think something wouldve happened if water got in. Do you reccommend replacing the cooling system because I dont really mind if I should, I just want my computer to run optimally. If so any reccomendation?
 
If the AIO cooler is a H80 single fan then yes, it is inadequate for anything but stock 3.7GHz frequency.

If you have room in your Tower case then a twin radiator Corsair H110i or equivalent will be OK for an OC or Turbo Frequency to 5.0GHz. A H115i would get you to 5.2GHz. You do need good airflow in your case and it's best to have ambient air flowing into the case past the radiator.
 
Sorry mate but a micro case will not work unless your prepared to build an Open loop cooling system.

The Gigabyte 990fxa-ud3 r5 is a decent MB but not for the FX-9590 being the beast of a processor that it is. Limited OCing capability thru Bios and VRMs get hot.
 
Solution