4790k with H100i Increasing temperatures

Eldimoni · Mar 21, 2017

I have a 4790k at stock speed on a Asus Hero Vii motherboard. I use a H100i AIO cooler on balanced mode. All the connections are connected properly and the bios settings for the cpu fan are set to let Corsair Link have control (q-fan & PWM) settings.

I started paying attention to the heat and noticed that idle temps were around 50. I tried reseating the cpu and did the rubber washer trick as the backplate was a bit loose and it seemed to work initially with idles around 28,but over the next few days I noticed that the temps would gradually increase each time I powered on. After a few days it was back to around 50+ again. I'm using MX-4 paste (small pea size).

I've tried remounting the cooler about 8 times over the last few weeks and it always helps initially then gradually increases back to around the 50s+.

Everything seems fine in Corsair link with the pump ram showing around 1500 rpm and radiator fans working and the voltages in the bios are nothing unusual. Turbo and c-states are disabled too.

Any ideas on what to do? Why would the temps initially be good but slowly increase over several days? I'm thinking of getting a new cooler but I'm not 100% it's the source of the problem.

kol12 · Mar 21, 2017

What is the water/coolant temp? With an idle of 50C it sounds like the pump could be broken or blocked. What temp do you get when re-mounting it and how quickly does it rise to 50C? It does sound unusual for the temp to creep up over a few days.

Eldimoni · Mar 21, 2017

kol12 :

When I reseat the cooler on the Cpu, I get idles around 28.
This will last maybe a day or two then it will go up to the low 30s for a day or so then up to nearer 40 within a couple of days. Eventually it will end up idling around 50+. It's like every time I boot it increases a bit. I usually turn the pc on once or twice a day.
The cooler temp is shown as around 34 on Link.

I've checked the cpu temp with Link, RealTemp and OCCP. They all show approximately the same Temps.
Im at a loss as to what the problem is. I don't want to waste money on a new cooler if that's not what's causing the issues.

It's worth adding that when the temperature goes up I've tried tightening the screws on the mount and this has a temporary effect of bringing the temperature back down a little but only for a day or so then back to the usual increases .

At the moment the cpu is idling around 50 and the Water temp is hovering around 39. The pump is at almost 3000rpm (full speed).

kol12 · Mar 21, 2017

That is a high water temp and idle Cpu temp but I'm unsure as to why it increases like this over 2-3 days. I had a similar situation with high water temp and cpu and it was determined that there was an obstruction in the loop, some debris, but the high temps were constant.

Is the cooler still under warranty? How long have you had it? The radiator can accumulate a lot dust and cause similar symptoms, have you checked that?

I'd suggest heading over to the cooling category at the corsair forums, there are some really knowledgeable people there and they might be able to pick something up that I haven't.

http://forum.corsair.com/v3/index.php

junkeymonkey · Mar 21, 2017

seeing you remounted it and it get good cooling but degrades may need to monitor the pump and the radiator fans ? [use another program to back up the corsairs softwares readings ]

seems it all that was steady and stable it should continue to maintain steady stable temps ? I don't guess you could of got a bad batch of thermal paste ??? still don't see it degrading that fast , but ???

look over some of these threads as will may find something in one ?

http://www.tomshardware.com/forum/all.html?refine=h100i+high++temps

http://www.tomshardware.com/forum/all.html?refine=h100+temps

sad thing is I look at them water cooler temps and all like I linked above on CPU's and feel my poor crap air cooler does as good or better for 26 bucks ??

''The H100i started from cold boot water temp started 31.9c probably 25c room temp and steadily rose to 38c over a few minutes then started to go back down. The cpu temps were in the 40's and were much more erratic jumping around top temp was 59c. I am seeing much more stable temps from the stock fan.''

''No, I think you need to RMA the cooler. The water is heating up too quickly and this usually means some sort of flow problem''

http://forum.corsair.com/forums/showthread.php?t=156678

Eldimoni · Mar 22, 2017

kol12 :

junkeymonkey :

OK so something weird happened. I was reading someone else s question on a similar topic about high temps and the suggestion (which seemed odd) was to knock the cooler (pump) to get rid of bubbles. I tried this not expecting much if anything to happen, but the temps instantly dropped from 50+ down to 30 (even as low as 26). I did notice they went up a few degrees the next time i powered up, but with a few small knocks, it went back down again.

This seems quite bizarre to me. Is it possible that its a thermal paste problem? its MX4 but maybe a couple of years old. Im pretty sure Im mounting the pump on properly and not lifting it to create bubbles when attaching.

junkeymonkey · Mar 22, 2017

I like that air thing , but seems it should not be getting trapped everytime you use it matter of fact I don't guess it should at all from the get go . is it that there under filed that it keeps recirculating air as much as the liquid ??

maybe try you unit this way [its show for a GPU but you can get the idea from it ]

http://imgur.com/UbwqG6X

artic claims 8 year on that mx4 stuff ?? now they don't say anything about unused opened tube of it shelf life . just as being used on a cpu and cooler ??

seems the ones I look at revolves around a RMA ?

http://forum.corsair.com/forums/showthread.php?t=130881

http://forum.corsair.com/forums/showthread.php?t=142205

kol12 · Mar 22, 2017

Eldimoni :

It sounds like you have air bubbles or a debris obstruction in the pump/loop. This was exactly what happened to me and I was also able to shake the case/pump to temporarily move the obstruction. I don't think it's got anything to do with the thermal paste. Ultimately your going to want to RMA the cooler, bit of a pain I know.

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