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tips on reseating CPU cooler

post #1 of 7
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I am going to get a bolt-thru kit soon and was wondering the steps I need to take when reseating my CPU. What materials should I use to clean it and how?

Also, I should I point my CPU in vertical direction so that the air is being sucked my the top fan instead of the back?

Any help would be appreciated. Thanks...
    
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post #2 of 7
Quote:
Originally Posted by jaysauce View Post
I am going to get a bolt-thru kit soon and was wondering the steps I need to take when reseating my CPU. What materials should I use to clean it and how?

Also, I should I point my CPU in vertical direction so that the air is being sucked my the top fan instead of the back?

Any help would be appreciated. Thanks...
When reseating a cooler, I always like to put the CPU through a thermal cycle (a short minute burst ought to do it) by running a program like Orthos or OCCT. The idea is to soften up the TIM by heating it up. The heatsink comes off very easily afterwards, for sure.

Insofar as which direction should your cooler's fan blow its air, the only real way which orientation is best for your particular case (pun not intended) is to test both ways and go with which gives you better results. Theory is one thing; real data is altogether different.

Good luck! Hope this helps.
    
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post #3 of 7
Want to make sure to use Isopropyl alcohol from a pharmacy (you probably already have some at the house) and make sure to use lint free materials when cleaning the thermal grease off. As for the air flow depends on how your fans are setup shouldnt be anything wrong with you exhausting out the back as long as the rear case fan is doing the same.
post #4 of 7
I would say that porting the heat out the back will be best anyhow as this is the general flow of air - in the front - out the back

As above - run something that will cause alot of heat just before to loosen the TIM

Also, make sure you don't put too much TIM back on - and clean it first - either with a cleaner or even jsut paper towels a few times
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post #5 of 7
Hi.

I would recommend a decent TIM like Arctic Silver 5 or Shin-Itsu. When you clean the surfaces prior to mounting you can use a lint-free cloth (cotton is good) and some rubbing aclohol or xylene-based cleaner (no scented cleaners).

Ensure that the mounting bracket for the HSF is properly and fully mounted to the mobo.

When tightening down the HSF move diagonally and across when tightening the bolts so that the HSF is pushed down against the IHS uniformly. One turn at a time is generally safe.

Once the HSF is initally placed on the TIM and IHS do not lift the HSF again as you will break the TIM seal.

Sometimes it helps to gently turn the HSF side-to-side when almost fully tightened down.... but you may have to experiment there.

As for orientation: if you have a blowhole that is approximately the same cfm as your HS fan, then upwards would be better imho. If it is an 80 mm and the rear exhaust is a 120mm fan then perhaps rear-ward would be more efficient; let the 80 be ancillary to the venting of warm air.


Edited by Syrillian - 6/5/08 at 9:03pm
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post #6 of 7
Quote:
Originally Posted by Syrillian View Post
Hi.

Once the HSF is initally placed on the TIM and IHS do not lift the HSF again as you will break the TIM seal.
Hm, whenever I try to reseat my HSF I always have to try to seat it a couple times, lifting it off at least 3-5 times. It's because the tips that lock into the four holes on the motherboard bend, preventing it from locking in. Next time I plan on not getting a cheap plastic tipped HSF. Anyways, would that affect the temperatures I'm getting?
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post #7 of 7
Quote:
Originally Posted by aznkorean View Post
Hm, whenever I try to reseat my HSF I always have to try to seat it a couple times, lifting it off at least 3-5 times. It's because the tips that lock into the four holes on the motherboard bend, preventing it from locking in. Next time I plan on not getting a cheap plastic tipped HSF. Anyways, would that affect the temperatures I'm getting?
Possibly

When the TIM dollop, line or dot gets pushed outward under pressure there are no airpockets; when the HSF lifts there is a chance that when re-seated the TIM will now have some "openings" in the seal.

...kinda like gum. If you step on ball of it it retains its integrity, when you lift your foot it stretches and "opens up".... not really a good analogy, but perhaps you get my drift?

But I stress and say again, "possibly".
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