4790k too hot

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Filip_27

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Mar 8, 2017
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520
I recently bought Cooler Master Masterliquid pro 140. Prior to that I had a very big coolermaster air fan for the cpu.

I Installed everything to the letter, I used the thermal paste provided with the watercooler, I made sure I didn't put to little, nor too much thermal. When I turned it on I didn't get the temperatures I expected.

By using turbo boost 4.4Ghz and 1.128 V I am getting around 50 C temperature while it works at about 10-15% load (which is my idle state since I have many background processes). When stressing it at 100% constantly I am going up to 90 C temperature, but average is about 80 C.

I tried to overclock it to 4.6Ghz which makes 1.310 V (there are automatic profiles on my G1 Sniper M5) and it was doing some 60 C under load of about 40%, but it hit the limit of 100 C under load of 100% and started throttling.

Are these temps normal with my cooler, or have I done something wrong?

 
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hazzyboy3

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Feb 15, 2017
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I would think that your cpu cooler must not have been put on correctly and is not disspating all of the heat. I would start by removing it and reapplying the past and then reinstall. After this can you please run a stress test and check your temps.
 
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Filip_27

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Mar 8, 2017
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It appears that the CM manual is a bit misleading since I put a lot of effort to screw the coolers the right way (as was shown in the picture) I even used magnifier to look at it better, but it turned out it was the wrong way. I noticed that the cooler took air from outside the case and blew the hot air inside the case. Since I turned them around the temperatures improved a lot.

I stress tested the cpu with 1.25V and 4.8 Ghz, it didn't crash, but it went too hot, to thermo-throttle after 15 minutes of stress testing. I dialed it down to 1.2 V and 4.7Ghz, did couple of short stress tests. It went towards 90 degrees but it didn't go beyond 95 degrees at any point. Through work I noticed that stability is an issue, noticed that I lost the keyboard twice, and it froze once, so I dialed it down to 4.6 ghz at the same voltage. Now it is stable (already on for two straight days) and while idle (which for me is about 10% load) it goes from 40 - 45 degrees, and through normal high load (which is about 60-70%) it goes towards 75 to 80 degrees after prolonged use. I use it to play a triple A game, there are two tvs which draw movies from plex (which uses live transcoding) at the same time, and I have three security cameras which record full hd in my yard constantly.

I think that thermal paste is applied well, since the radiator is super hot when I touch it, which means that the heat is successfully going out of the pump area, the challenge is to get the heat out of the radiator as good as possible. By turning the fans the right way (which turns out that you should be able to see the logo when attached) I improved the result, but I still think it can be better. The case is small CM Storm Scout (first version) so do you think I can still improve it somehow, by changing the volts, or some other settings? I had the fans set on performance, but the pc became a jet engine, so I had to set the dial back to normal, without any significant loss in performance. Do you think my results are normal now?
 
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Filip_27

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Mar 8, 2017
6
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520


I think so too. I expected to easily go to 1.3V with this setup. it is the smallest water cooling, only one radiator, but I see other tests showing different results with the same cpu.

Can we rule out that thermal paste and application on cpu is proper if the radiator is super hot? I also used their thermal-paste, which was included on the kit, I took care not to put too much or too little of it and tried to put equal quantity everywhere.

Is maybe the case too small?

Here is a picture of how the case looks like in my home.

Any further thoughts? What do you think I should try to improve it?
 
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Filip_27

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Mar 8, 2017
6
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520


Apart from the CPU fan there were two other fans on top and on the side before. For the water cooling I had to take out both chasis fans, so there is only one fan left in front of the disks, no other fan around the cpu. Do you think I can improve something with some extra chasis fan?
 
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Filip_27

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Mar 8, 2017
6
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520


They have a fan in front of them to cool them. But definitely a possibility. Would you suggest that this heat contribution is significant? Is it worth to invest and give them better cooling?

Getting them out of the box is not an option, I want them inside and close to the cpu. One is for gaming, another is for my music and movie collections (which get transcoded through plex for my home tv's) third one is for dvr capabilities. So three is bare minimum. There are two ssd's actually, one is where I keep the OS, the second one is where I keep the current game I am playing.

Update: forgot to mention that I have a TV card, which you can barely see, below my graphics card. I use it to schedule recording of TV content. I never mentioned it because I don't think it generates any heat. It has a passive cooler.
 
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