Corsair H75 Running hot 48°c - 94°c- i7 5820k

TonnyIllum · Mar 26, 2017

I'm playing a lot of ARK and Conan Exiles. Both unoptimized games.

This is giving me a lot of troubles, because my CPU seems to get hot.
I don't know what it used to be. maybe it has always been like this.

Idle temperatures rarely goes below 48°c, and it peeks ar 94°c.
Running a game like League og Legends puts the temp to arround 84°c.

The specs:
CPU: i7-5820k
MB: Gigabyte x99 G1 WiFi
Cooler: Corsair H75
GPU: GTX 970
Case: Thermaltake Level 10 GT
OS: Windows 10 Pro
2 x 1080p AOC monitors.

Nothing is overclocked.

I've been trying for the last few days to figure out what is wrong.
- Changing the direvtion of the fans for the H75 radiator. Now works as an intake instead of exhaust.
- Renew the cooler paste (Artic mx-4)
- CPU_OPT header in the bios is set to MAX, which puts the pump for ~1840 RMP. (CPU_OPT is used on the gigabyte board for watercooling)

Based upon the sounds from the pump, i'm assuming it have a few air bubbles inside - I have no how this affects the effectivenes of the cooler.

I need help.. I need suggestions.

Ecky · Mar 26, 2017

The H75 is a low-end single 120mm watercooler. It's about on par with a $40-50 tower cooler, beating something like a Hyper212 but losing to any of the nicer 120-140mm heatsinks out there. That said, I'd expect it to run a bit cooler than that even with a 6-core CPU, given that you're at stock clocks.

A sealed unit shouldn't have bubbles in it, and that might be related, but you might also feel around and see what's hot and what's not. If the radiator is getting really hot, you simply don't have enough surface area or airflow to handle the heat that needs to be dissipated. If it isn't, the heat isn't getting there, and would indicate a problem somewhere else. It could be a poorly attached IHS (unlikely but not impossible), bubbles in the block, or possibly some kind of other pump issue.

TonnyIllum · Mar 26, 2017

One of the tupes is very hot while both the radiator and the other tupe is cool. (But then again, right now i'm running ~50°, so not that hot to begin with)

And while a sealed unit shoudn't have bubbles in it, i still think it does.
It sounds a lot like this: https://www.youtube.com/watch?v=73UsHVTH5Z0

Ecky · Mar 26, 2017

So, bubbles can hang around the impellers and prevent the pump from working. You may be able to shake them loose and get them to settle somewhere else in the loop. It's possible you could bleed the system, but these AiOs are not designed to be user-serviceable.

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