is bad application of thermal paste causing heat with i5-4690k

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davemullet

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Feb 10, 2015
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hi everyone, im new to overclocking and put my i5-4690k to 4.5Ghz at 1.275V with an asus z97-A and it worked for a liltle bit tested trought OCCT. All of a sudden i get a BSOD and CPU temp when crazy testing in OCCT. I talked with my dad who installed my hyper 212 evo for me (cause was out of town) and he said when removing the protecting plastic from under the heatsink some glue manage to remain under heat sink and he decided to try to remove it with some alcool but some of the glue remain... and he decided to install compound anyway after waiting for the alcool to "evaporate" he installed the heatsink with compound. do i have to remove the heatsink and "wash" the paste and repeat installation of the heatsink ? thx in advance for the response and sorry for my english im french canadian
 
Solution
clutchc
There should be no "glue" holding the protective clear plastic film over the bottom of the heatsync. But it may be a wise idea to remove the heatsync and see what is actually stuck under it. Start over with the installation when you have it removed.
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clutchc

clutchc

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There should be no "glue" holding the protective clear plastic film over the bottom of the heatsync. But it may be a wise idea to remove the heatsync and see what is actually stuck under it. Start over with the installation when you have it removed.
 
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Solution
Solandri

Solandri

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Jan 4, 2012
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The vast majority of the heat transfer is from metal-on-metal contact between the CPU's heat spreader and the heat sink. The thermal paste is a much worse conductor of heat, and the only reason it's used is because as bad as it is, it's a better conductor than an air gap.

If there's a small dab of glue holding part of the heatsink above the CPU so it doesn't sit flush, you've lost nearly all of your metal-on-metal contact. You cannot "bridge the gap" with copious amounts of thermal paste. You need to scrape off that glue so the heatsink sits flush. Use only the tiniest amount of thermal paste, to fill in microscopic air gaps. Any excess thermal paste which is preventing metal-on-metal contact is making things worse, not better.
 
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davemullet

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Feb 10, 2015
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Hi thanks for replying i got update. i removed my heatsink today and effectively there was some glue under my heatsink use isopropyl alcool 99% to remove the paste and the glue reapply thermal paste. but my heatsink is now a little offset because of the bracket... but temps are fine i dont want to redo the installation is it really worth it reinstalling to make my heatsink perfectly parrallel with the cpu socket ?
 
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JimF_35

JimF_35

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Yes. You can get air under your heat sink which will dry out the paste and cause you problems later. Try to fix the bracket.

 
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davemullet

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Feb 10, 2015
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First thanks for replying, god damn really!? loll that was not the answer i was looking for haha... but i will reinstall my heatsink and the bracket correctly... oh and by the way if i got some question with overclocking am i in the right thread ?
 
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