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is it safe to use tim (mx-4) on a 7970 memory chips instead of "thermal pads" because they are not available where i live - Page 3

post #21 of 38


OK - the VRAM chips I've highlighted with blue circles - and I suspect the ones I've highlighted with green circles may be VRAM chips with thermal pads over them.

if the heatsink doesn't contact them directly, you need to use themal pad, not TIM, to fill the gap.

EDIT :

CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), default quality

Here is another pic of one apart. you can clearly see the white pads on some of the chips, and corresponding heatsink positions.
Edited by latelesley - 3/31/13 at 2:53am
post #22 of 38
Thread Starter 
Quote:
Originally Posted by latelesley View Post



OK - the VRAM chips I've highlighted with blue circles - and I suspect the ones I've highlighted with green circles may be VRAM chips with thermal pads over them.

if the heatsink doesn't contact them directly, you need to use themal pad, not TIM, to fill the gap.

EDIT :

CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), default quality

Here is another pic of one apart. you can clearly see the white pads on some of the chips, and corresponding heatsink positions.

yes those had TIM on them when i took the hood off the first time, and that TIM was kinda hard too because it has been there for a while so it dried out which means the previous owner didn't do it

the 7970 is made by amd directly it's a GHz edition !

because it doesn't have any sort of label on it or any sticker that specifies a board partner

i bought it used just the card and i've been mining with it for 4 days non stop now and there is not problem what so ever till now but you guys just made me freak out redface.gif
Edited by invincible20xx - 3/31/13 at 2:58am
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post #23 of 38
Quote:
Originally Posted by invincible20xx View Post

yes those had TIM on them when i took the hood off the first time, and that TIM was kinda hard too because it has been there for a while so it dried out which means the previous owner didn't do it

the 7970 is made by amd directly it's a GHz edition !

because it doesn't have any sort of label on it or any sticker that specifies a board partner

Well my friend, it looks like someone's had the heatsink off before you. Get some thermal pad that I linked to further back (make sure you get the right thickness) and redo your heatsink for peace of mind. Don't use pad that's too thick. as it can hold the heatsink off the GPU. smile.gif
post #24 of 38
Thread Starter 
Quote:
Originally Posted by latelesley View Post

Well my friend, it looks like someone's had the heatsink off before you. Get some thermal pad that I linked to further back (make sure you get the right thickness) and redo your heatsink for peace of mind. Don't use pad that's too thick. as it can hold the heatsink off the GPU. smile.gif

ok thanks, i understand i don't know where to get those pads here that's why i've used TIM in the first place

can't order online because i live too far
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post #25 of 38
Where do you stay? Are there any electronics stores local to you? (you know, RadioShack, Maplin(Its a UK store) or something similar?) I'm thinking you may get thermal pad at an electronics store, if a local PC shop doesn't carry it. Plus, thermal pad is that thin, it could probably go by ordinary mail, its not gonna be a huge parcel.
post #26 of 38
Thread Starter 
i live in egypt we do have radio shack here but i doubt that they sell thermal pads

i'll see if i can get, i was just really hoping that mx-4 will do the job redface.gif

seems not from all the responds here

but maaaaaaaan i could have just used it as i received it and i wouldn't even know that it was using TIM on the GDDR5 Memory chips

now the peace of mind is lost....
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post #27 of 38
Quote:
Originally Posted by invincible20xx View Post

what do you mean by "the vram it self" ?


The area in the green is what im talking about, those get way hotter than the VRAM itself, if you want good cooling you should worry about that than the VRAM itself....VRM = Voltage Regulator Modules
post #28 of 38
Thread Starter 
Quote:
Originally Posted by Aesthethc View Post



The area in the green is what im talking about, those get way hotter than the VRAM itself, if you want good cooling you should worry about that than the VRAM itself....VRM = Voltage Regulator Modules

those had a thermal pad on them

i know the difference between VRAM ( GDDR5 Memory Chips) and VRM (Voltage Regulator Modules)
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post #29 of 38
Quote:
Originally Posted by invincible20xx View Post

those had a thermal pad on them

i know the difference between VRAM ( GDDR5 Memory Chips) and VRM (Voltage Regulator Modules)

Sorry, just wanted to clear that up just in case... But in the case of your VRAM, you should look into getting thermal tape? Sekisui thermal tape?

http://www.ebay.com/sch/sis.html?_kw=thermal+tape+sekisui+adhesive

can you get these? or is TIM your ONLY option? like flat out "ONLY" no other option?
post #30 of 38
EEK! Well I don't know what suppliers you'd have locally. A quick google didn't find anything, so I think you may have to order from abroad i'm afraid. Unless you can find a place that sells electronic components (semiconductors capacitors resistors etc). The USA Radioshack does, but the Egyptian one just seems to be whole goods, not parts.

Maybe sheet copper, like was suggested above could be the solution. It would have to be the right thickness of course, but then you could use your MX-4 on each side of the copper.
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