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FAQ: How to (step-by-step) clean the 8790 GPU cooling system. - Page 3

post #41 of 47
6/16/06 at 1:01am
I wish I'd bought that tape, to help reduce variables in this troubleshooting.

G-Omaha, do you recall how the thickness of your frag tape compares with the factory thermal tape?

According to that webpage, G-Omaha's tape is .05 milimeter thick. Mine is .127 milimeter thick. Both of them are much thinner than the factory tape, which appears to be around .5 millimeter. I think I'd prefer the thicker stuff. Perhaps that site has a misprint? .05 mm seems ridiculously thin.

Thanks all for the help.
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post #42 of 47
6/16/06 at 10:30am
Looked and Felt about the same thickness from what I recall as the original blue table that was on there. DO NOT REMOVE the very DENSE tape that covers the GPU Memory - replacement for that tape is hard to find - I still have not found any....
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post #43 of 47
6/19/06 at 9:29am
About the thermally conducting tape or frag tape as some of you call it. 3M/Scotch has a thermally conductive tape, 9882, 9885 and 9890. Thickness are: 2, 5 and 10 mil. In mm that is: 0.054, 0.127 and 0.254.

Which one to use inside the Sager 8790/Clevo D870P?

There is nothing applied to the GPU in my Clevo. Is this really correct? At other places there can be a blue thermally conductive tape visible.
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post #44 of 47
6/19/06 at 12:03pm
That's correct, Roger. This machine doesn't have any thermal compound directly on the GPU.

There are 4 applications of the blue tape, and those are what I recently replaced with a thinner thermal tape and am now having higher temps.

I think none of the 3M varieties are appropriate. I'll be trying the frag tape indicated by G-Omaha. I emailed the company and they confirmed that .05 mm is a typo; the product is .5 mm thick.
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post #45 of 47
6/19/06 at 12:21pm
They have corrected that misprint now!
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post #46 of 47
6/21/06 at 12:27am
Do we have any pics to assist non-reading types with the cleaning process?
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post #47 of 47
6/21/06 at 3:22am
Quote:
Originally Posted by Inkling
This machine doesn't have any thermal compound directly on the GPU.
Would not a thin layer of thermal compound improve the heat transfer to the metal plate/heat pipe?

On top of the metal plate (the keyboard shielding), there is a transparent tape covering about half of its surface. Why this? It will block some of the cooling through the metal plate. The underside of that metal plate is covered by a black tape, also blocking some heat transfer to the air. I have pictures showing this but no server where I can place them.

Roger
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