Changing gpu thermal compound help.

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Huuhailija

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Jan 20, 2015
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Hello, so my Sapphire Nitro Fury card was running very hot when load (over 80 degrees) so i decided to change thermal pads and compound inside. Nothing i have not done before, but when i opened up the card i saw plastic partly covering the heatsink of the chip.

So i ripped it off and now i noticed that chip heatsink is funny shaped and under the plastic there was some shiny metal which i have never seen next to heatsink yet.

Pic:
https://imgur.com/OF1Y6uj

So my question is what is that you see in the edges and i now figured the plastic was covering that part from overflooding paste. Do i need to fear something bad happens if paste hits a little into that surface when i reapply it?

PS: The factory default compound was dry and shit no wonder my card was like vulcano.

 
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Mark_1970

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Nov 14, 2015
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Just be sure your heat paste you use is not metal based or conductive in any way, like this ceramic type....http://www.arcticsilver.com/ceramique.htm because there is electrics too close to the TIM
Replace the pads too with new same thickness pads as the old are now squashed and may not settle back in with a great contact if used again. the vrm/memory on the card relies on these pads to cool and if they are not, this can lead to unstable use or throttling down power or even death
 
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Huuhailija

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Jan 20, 2015
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I have articic mx-4 which isn't metal based or contains anything conductive. The more i'm just curious is that back of the chip ?
It looks like something you don't wanna get fingerprints on.
 
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Mark_1970

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Really fingerprints are something you don't want anywhere near electronics, can lead to oxidising/corrosion/failure, especially on ram/gpu/cpu plug contacts. I only ever touch my parts on their edge or somewhere non critical
 
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Reaper_7799

Reaper_7799

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May 27, 2015
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That's weird, I dunno about it not booting...when I took my card apart and attached the hybrid unit to it, I forgot to plug in the power to the pump when I had the card open but it booted up and worked fine, it just ran very hot.
 
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Huuhailija

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Yeah i found it very weird too, i mean nothing could have damaged the card and i didn't forget to plug fan power cable. I'm gonna try to loosen up the screws a bit and see if it works. ( heard sometimes this could be the case).
 
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Reaper_7799

Reaper_7799

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If I remember correctly, the spring screws that hold the heatsink to the chip, mine were not very tight, at least nowhere near as tight as I could do it. Maybe double check your power connections and maybe reseat it again in another pci slot if it still doesn't work.
 
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Huuhailija

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Jan 20, 2015
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Re-seated heat sink, didn't put screws too tight, tried another pci-e slot and still no video input. System runs fine with old video card or without any video card with integrated graphics.

This is very odd indeed how doesn't it even work. Seems like it just died. Fans r not spinning with boot-up but sapphire logo has blue light on. So it should get power.

Edit: 1 reason i can think of why wouldn't it work is bcos thermal pads are too thin and vram just got fried ? Or it overheats before bios screen shows up but i doubt it would be that critical since thermal pads hardly do heat transfer anyway. Replaced pads with 1mm replacements, which were around same thickness as factory defaults.
 
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Mark_1970

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