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Asus 4850 overheating, reapply of TIM?

post #1 of 6
Thread Starter 
I gave my old 4850 to my best friend. Well, it's overheating on him now and his PC shuts off. It's old, so I wouldn't doubt it needs a good clean/TIM reapply.

I have some AS-5 TIM, would that work for a GPU or do I need something different?

Also, I've never put new TIM on a GPU before, is it hard?

Thanks guys!!
Edited by pjBSOD - 4/25/11 at 1:28pm
post #2 of 6
it should work fine. AS5 is still a good grease and should have little trouble dealing with the heat.

depends on the card and cooler in question. Some cards, like mine, are very easy to re-grease. Just undo the 4 bolts, take off the heatsink, clean both the chip and heatsink, put the fresh grease on, and then reattach the heatsink.

On the 4870 though, its going to be more difficult. The VRMs and the memory also have thermal material, so i wouldnt recommend you mess with it. The chip itself should be exposed, and you want to clean it of all previous grease until the chip is mirror smooth. CAREFULLY put a small drop of grease on it, about 2/3ds the size of a grain of rice, onto the chip, dead center. Then, reattach the heatsink, making sure to not let it slip much or pop off, as that will introduce air bubbles, which are bad.

And if you are really wanting to go overboard, get him a better heatsink. Stock heatsinks from that generation tend to be meh in cooling power.
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post #3 of 6
rma for newer card!
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post #4 of 6
AS5 works fine. But, clean the heatsink on it and see what happens before taking it apart.
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post #5 of 6
Thread Starter 
Okay, cleaned it THOROUGHLY. It basically looks new. I also removed the old TIM on the heatsink and chip the most I could. Reapplied some AS-5 compound with a pea sized dot method, and then put the heatsink on.

Put it in my friends rig and temps dropped from load 86 to 63, and the TIM hasn't even taken "full effect" yet since I just put it on.

Yay!
post #6 of 6
Quote:
Originally Posted by E-Peen View Post

Put it in my friends rig and temps dropped from load 86 to 63, and the TIM hasn't even taken "full effect" yet since I just put it on.

Yay!
Well done!
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