Changed stock fans on H100 and now CPU is overheating!

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puppydust

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Nov 23, 2012
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Hi everyone. I'm a novice in the world of overclocking, so excuse the rookie question! I've had my system built for me a few years ago so I don't have any experience in how it's put together, recently I wanted to replace the stock fans because they're incredibly noisy. However, since replacing the fans when I run a CPU-intensive activity the core temperatures are shooting up through the roof! (The new fans are Noctua NF-F12s). Looking at the temps they jump up almost immediately to 91 and rising. I have to stop the process in order for it to cool down.

I reinstalled the old stock fans again to see if it was due to the fact the new fans are underperforming but the temperatures are still shooting up immediately, which makes me think it's not the fans and I've screwed something up in removing the unit.

I removed the whole CPU cooler in order to easily clean the radiator outside. In the process I noticed the residue of the 'thermal material' as is mentioned in the manual (pictured). Could it be due to this? A little reading on this forum makes me wonder if I need to reapply such a material in order for the CPU to be adequately cooled. Does this sound like the solution to my problem? Thanks, and sorry if this is an obvious question

i7 3930K, OC'ed to 4.2GHz
Asus P9X79
Corsair H100
32 GB DDR3

HgiKaLn.jpg

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The_Staplergun
You'll know if it's leaking because it will suddenly not cool very well. Good thing you found it. Contact them as that may be under warranty still.

I would honestly say remove that from your case immediately and do not use it whatsoever.

You're lucky as hell. Look how close that water seeped to your cpu. If it had run over the grease and down into the pins you would have been screwed.
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Nordein

Nordein

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The thermal paste looks really bad in this state. I'd definitely recommend wiping it all off then adding a fresh dot on. I'm also curious about the dark spots at the edge of your CPU block, Looks almost like corrosion too me.

Other than that, also make sure you connected everything properly.
 
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puppydust

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Thanks for your reply and your suggestion. I've ordered some thermal paste and will give this a go.

I also got a better look/picture at the block and it does look like corrosion. Is this indicative of a problem? Obviously the cooler was working fine before I removed it. I wasn't planning on replacing the unit just yet but if it suggests liquid leaking then that's something to be concerned about right?

no9OKUx.jpg
 
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puppydust

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Ok, damn... In that case there's no other sensible option than to replace the unit, I suppose?
 
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adamscurr

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I think you might have saved yourself from having to replace your motherboard or cpu by finding the leaking issue. I think it is only a matter of time before you end up with a larger leak and a really bad situation...

I'd recommend replacing your cooler. If money is an issue, I've used the good old evo 220 in the past and it is cheap and cools well... :)

Adam
 
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puppydust

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Ok, that's a wise move. Time to replace it methinks.
Kinda didn't expect this sort of thing to happen really, how are you supposed to know if your cooler's leaking? Other than taking it off every now and then, which isn't very practical! Scary to think it could just wreck your CPU without you knowing
 
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The_Staplergun

The_Staplergun

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You'll know if it's leaking because it will suddenly not cool very well. Good thing you found it. Contact them as that may be under warranty still.

I would honestly say remove that from your case immediately and do not use it whatsoever.

You're lucky as hell. Look how close that water seeped to your cpu. If it had run over the grease and down into the pins you would have been screwed.
 
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