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VRM heatsinks on GTX 480?

post #1 of 11
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I recently bought an Accelero Xtreme Plus from a member here, but now I noticed that the VRM's are running very hot while under load. I used the heatsinks that came with this set, but once the VRM's get hot, the 3M adhesive becomes very weak and falls off. Can I use TIM to hold the heatsinks to the VRM's? If not, what can I do? I looked on Ebay and found these. Would they work well for my purposes?

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post #2 of 11
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post #3 of 11
TIM is not meant to hold heatsinks onto components. You have to use either a thermal tape like the one you linked (I have heard that Sekisui thermal tape is very good) or thermal glue, which tends to be very difficult to remove and thus considered "permanent".
Here is another link for 3M and Akasa tape:
www.frozencpu.com/cat/l3/g8/c487/s1291/list/p1/Thermal-Thermal_Pads_Tape-Thermal_Tape-Page1.html

It's always important to properly clean the "sinked" parts as best that you can. Even using a soft eraser has been recommended to scuff off the surface for better contact.
I use 95% isopropyl alcohol as a final cleaner. Arctic Silver's ArctiClean is supposedly better, but pricey.
    
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post #4 of 11
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I bought the thermal tape that I linked, and it should be here in a couple of days, and in the meantime I'm using thermal paste to hold the sinks on the chips and it is annoying. They keep falling off. I do not have any 90%+ alcohol handy, but I will buy it from the store next time I go.

And one more question, how can I rub off the white tint the chips get from using thermal paste on them? No matter how much I scrub, it will not go away.
    
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post #5 of 11
that thermal tape will work great! i recently did two of these installations (also of GTX 480s) for a client using EK thermal tape.

the white tint you can peel off with a box cutter or scalpel.
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post #6 of 11
Thread Starter 
Quote:
Originally Posted by s0d0mg0m0rrah View Post

that thermal tape will work great! i recently did two of these installations (also of GTX 480s) for a client using EK thermal tape.
the white tint you can peel off with a box cutter or scalpel.
I've been hearing good things about the thermal tape I bought, lets hope its as good as it sounds!
The tint is not something on the actual chip, its more like in it. Its like when you stain wood for the first time, the first layer. Thats exactly what it looks like, except its white.
    
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post #7 of 11
interest.. can you post a picture?

you can try sanding it down?
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post #8 of 11
Thread Starter 
Quote:
Originally Posted by s0d0mg0m0rrah View Post

interest.. can you post a picture?
you can try sanding it down?

I will post a picture tomorrow or today when I install the heatsinks with the thermal tape.I don't think I can sand it down, I'm pretty sure I will void the warranty for sure. Its not affecting performance, I am worried because if I need to RMA in the future, it will be clear to the manufacturer that I used something on the RAM chips and the VRM's. I am using Ceramique by AS.

EDIT: meant to say thermal tape above.
Edited by Sathirian - 5/7/12 at 7:32am
    
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post #9 of 11
don't bother with thermal paste as DerComissar said earlier.

it won't hold the heatsinks in place properly and they'll fall off after you go to install the card in the case.
hold out until you get the thermal tape.
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post #10 of 11
the voids in the plastic of chips are holding TIM...it looks like it has soaked into plastic but some goo gone followed by some alcohol will get it off.

if both surfaces are clean and its decent thermal tape it will normally hold pretty well.
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