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H80i V2 not cooling CPU


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I got the H80i V2 in September 2017, replaced motherboard, CPU and PSU last September 2020. Everything has been working fine until a couple of weeks ago when my CPU temps starting getting very high, regulary hitting 70c under half load but the temp on the cooler didn't go over 35c.

 

We have been having a heatwave here and the CPU had been under heavy load, so I thought it could just be that at first but I took the machine apart, remounted the cooler, new thermal paste and nothing has changed at all. I am pretty sure that the cooler is tight to the CPU and corsair link says it is pumping away. The temp will come straight down after going high and settle in the mid 40s.

I am worried that my pump is gone or there is a lack of water. Any ideas on what to do?

Under no load
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Using powerMAX for full load, Temp 2 gets 90c and the pump temp has barely risen.

image.png.6b3c1da52cfea36dfebff20f3493debb.png

Edited by Ghrugen
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holy c*** almost 1.5V VID, and 229W, your overclock is most likely to blame for the high temperatures. it's way too high. you should be able to get a stable 5ghz OC with less voltage than that.

the temp shooting to 90 is normal under these circumstances. try to reduce your Vcore first, 1.48V on VID is way too much, borderline dangerous.

just as an example on a 10900k, with two more cores, overclocking to 5ghz, i don't even reach 210W, and Vcore is under 1.3V (VID around 1.31).

 

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I am not running an overclock. Everything is on Auto in the bios. I did update the bios not so long ago so maybe something has gone funny I will have a dig around.

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it seems that's multicore enhancement then. look for it in the Bios and just disable it.

You can still go to the CPU power settings and disable power limits to let it boost as it wishes, but at least you won't have MCE pushing ruidiculous voltages.

Worth checking your settings, definitely !

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Why are the fans at zero RPM?

Do you have the fans connected to the cooler? If not, where are they connected? And is the cooler properly powered (see the AIO FAQ in my signature for details on properly powering the cooler, Section B).

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1 hour ago, DevBiker said:

Why are the fans at zero RPM?

Do you have the fans connected to the cooler? If not, where are they connected? And is the cooler properly powered (see the AIO FAQ in my signature for details on properly powering the cooler, Section B).

I don't know. I have them connected to the CPU_FAN but when its lower temp it says 0 RPM even if I have it at 100%.

image.png.0258494adb647c3e4e6933b8bb6f321c.png

It does show a number if I put it under load with not much difference to the pump temp
image.png.6b3c1da52cfea36dfebff20f3493debb.png

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The cooler isn't being properly powered. The fans on the cooler are connected to the pump head, as they should be. The pump is then connected to the CPU_FAN header - again, as it should be.

The problem is that your CPU_FAN header isn't set to PWM Mode or 100% all the time in your BIOS. This powers the cooler. Once you do that, lets see what we get.

Please, please, review section "B" of the AIO FAQ in my signature. It goes into this at length.

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That makes perfect sense @DevBiker have swtiched it on and got a fan speed in Link. Not much change in the temp for the CPU but there was under load.

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Hopefully yourself and @LeDoyen have solved it. I will give it a litle while and see how it goes. Thank you both very much.

Edited by Ghrugen
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