CPU overheating on custom build pcs

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demonhound

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Sep 17, 2008
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I have two custom build pcs here that seem to share roughly the same overheating problem. The only hardware in common between the two systems is the CPU. They both seem to idle around 30c - 40c depending on room temperature. But when we try to run games they shoot between 70c to 100c. 90c to 100c occuring when the room temperature is around 30c (our air conditioner is currently broken). I figured this was a mid end pc and decided not to go with water cooling. Any suggestions on what I may be doing wrongly or parts that may need changed is greatly appreciated!

Here is a picture of the inside of one of the systems:
https://drive.google.com/file/d/0B443626r1nRDTUFFNWJ2dG5HSUE/view?usp=sharing (The wiring is a bit messy but doesn't block the fans)

One of the system spec links:

CPU: http://ark.intel.com/products/80810/Intel-Core-i5-4690-Processor-6M-Cache-up-to-3_90-GHz

CPU cooler: Arctic Cooling Alpine 11 GT REV 2 CPU cooler (pre applied thermal compound)

Case: http://www.coolermaster.com/case/mid-tower/k380/ (currently using one intake and one exhaust fan, not enough space to fit more with GPU and memory blocking other fan slots)

Mobo: http://www.gigabyte.com.au/products/product-page.aspx?pid=4666#ov

Graphics: GTX 660 OC
 
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nikita787

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Nov 3, 2012
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First off, try re-applying thermal paste and reseat your heatsink. I don't think your room temp of 30c is that big of an issue. Once you've repplied the thermal paste, report back with results and we'll go on from there.
 
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demonhound

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Sep 17, 2008
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Sorry I probably should have mentioned that both systems have been having this issue since they were built about half a year ago. So unless the reapplied paste was not enough from the very start then it probably isn't the issue. I also believe both heat sinks are seated properly. Thanks for the suggestion though :)
 
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petek480

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May 6, 2015
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You should really try to arrange those cables better. It's blocking any air circulation inside the case.

Did you overclock your cpu? If not then you probably have to reapply the thermal paste. Remember a little thermal paste goes a long way. Having too much thermal paste can hurt the performance.
 
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petek480

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May 6, 2015
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Actually after looking at your heatsink I noticed that it comes with thermal paste preapplied, so as long as you didn't wipe that off and applied your own then it should of been good enough.
 
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smorizio

smorizio

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Jan 22, 2010
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the issue is the heat sinks. it not how they were installed but the wattage of heat they can remove. the units you picked up are aftermarket replacement for the stock Intel cpu cooler. the cooler you used has the same cooling output as the stock intel cooler. what you want to look at is the evo 212 or another larger brick air cooler that can pull more heat from the cpu and vent it out.
 
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demonhound

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I was wondering about that as well. I ran with the stock coolers for awhile before buying the arctic cooling heat sink but it only seemed to drop a couple degrees at best. At these temperatures do you think that a larger brick air cooler will be enough or should I really look into water cooling? It still seems a bit crazy high even if it was a stock cooler sitting on it so I thought maybe something else was wrong.
 
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demonhound

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Sep 17, 2008
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It has not been overclocked and the paste was indeed preapplied and hasnt been reapplied since.
 
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demonhound

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Thanks, I think this will be my next step to try. Time to shop around and hope for the best. Air cooling should be enough for this system right? Am I right to assume that water cooling would be a bit overkill? lol
 
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smorizio

smorizio

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Jan 22, 2010
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the evo coolers for the price are good coolers. with air coolers it the number of heat pipes...the speed of the fan for noise. good ones use larger fans and run at 600 rpm or less for noise. down size of air coolers is there weight. if there not installed right and or pc shipped /moved right with them installed they can rip off the mb and do some damage to the inside of the pc. the plus side over sealed water coolers is if there fan fails they still work..just not as well and the fan is a 10-20 part to replace. if a sealed unit leaked it can short out the mb if the pump fails the unit has to be replaced and your rig is down till you get a replacement. with the air coolers better ones use a back plate and a few screws to hold them on.
 
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