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if ur switching cooler why do you have to get rid of thermal compound

post #1 of 6
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also do you have to get rid of it all and what happens if you dont
post #2 of 6
It is best to clean off the IHS & heatsink & replace the thermal paste, frequently the old paste gets dry, so when remounting a heatsink it just doesn't give as good temps as a fresh application.
Even with fresh TIM, pulling of the sink & remounting it can trap air bubbles in there & affect cooling performance.

Replace if possible, you can reuse the TIM if absolutely necessary (something there is better than nothing), but keep in mind temps can be worse than before the heatsink was removed.
    
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post #3 of 6
if you just use the same paste without putting new paste on then it can trap air. air is a very good insulator and the whole point of the paste in the first place is that its a good heat conductor.
    
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post #4 of 6
Quote:
Originally Posted by Mrjellop View Post

also do you have to get rid of it all and what happens if you dont

ya wanna get rid of all the old paste,,so you can spread a nice new batch,,use some rubbing alcohol to clean it good,,,lots of guys say a grain of rice size in the middle,,,,i use about the same amount as a grain of rice,,but I spread it out thinly,,i get decent temps so it works
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the tooth
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post #5 of 6
and remember, less is more. just a very thin small line down the middle. when you put that heat sink on it will spread perfect. too much makes a mess and actually makes it not work.
post #6 of 6
Quote:
Originally Posted by trailer park boy View Post

ya wanna get rid of all the old paste,,so you can spread a nice new batch,,use some rubbing alcohol to clean it good,,,lots of guys say a grain of rice size in the middle,,,,i use about the same amount as a grain of rice,,but I spread it out thinly,,i get decent temps so it works

i find using goo gone then alcohol with a q tip on the cpu perfect. i use coffee filter to wipe it clean after very well.
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