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Can too much thermal paste = higher temps?

post #1 of 17
Thread Starter 
I just installed a Zalman 9500 the other day and my cpu temps at idle were around 34-37C. I had a bit of trouble with the install becase the mobo was still in the case, but eventually got it done and I used the small dot method of AC5 in the center of the cpu for the thermal paste. So today I decided to redo the installation and remove the mobo from the case to make it easier. This time I scraped the paste over the entire heatspreader on the cpu. Now my idle temps are 37 - 39C. Could this be caused by too much AC5?
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post #2 of 17
Yes, it's probably way too much.
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post #3 of 17
yes it can.. to much paste can start to capture the heat instead of transfer it.. with as5 its said that the size of a grain of rice or a bb is to be usded and spread evenly
    
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post #4 of 17
Thread Starter 
Well crap, I guess I'll have to redo it again tomorrow. By the way, nice smoking baby!
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post #5 of 17
Not only is that too much AS5, but you applied it incorrectly. This would explain your higher temps.

Review the instructions for applied Arctic Silver 5 on their website.

AS5 Application Instructions

You do not want to spread it out. You want to place a small amount in the center, and then place the heatsink evenly down on it, with a slight side to side twist to work out any air bubbles.
post #6 of 17
another thing i've noticed with thermal paste, it seems to 'break in' over the course of a day or two. if i reapply the thermal paste on my heatsink, the temps jump up for a day or two, then go back to what they should be. its like the thermal paste needs to set or something.
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post #7 of 17
Quote:
Originally Posted by kofrad
another thing i've noticed with thermal paste, it seems to 'break in' over the course of a day or two. if i reapply the thermal paste on my heatsink, the temps jump up for a day or two, then go back to what they should be. its like the thermal paste needs to set or something.
Yes it sometimes takes up to a few weeks for it to totally set in.
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post #8 of 17
I have to reseat my BT


kinda annoying as hell though because the BT slides sooo much when you place it on the CPU
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post #9 of 17
The cure time for AS5 is not a dramatic drop in temps. Everyone one here makes it sound like it's the be all and end all. If his temps are crap, no amount of "curing" will fix it.
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post #10 of 17
Quote:
Originally Posted by Sideburns
The cure time for AS5 is not a dramatic drop in temps. Everyone one here makes it sound like it's the be all and end all. If his temps are crap, no amount of "curing" will fix it.
True, its only a over time drop of like 1-2 C
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