Add heatsink to videocard?

[EvilAgryBob]

I had an idea the other day.

I have noticed that the backside (opposite of heatsink) of videocards gets very hot. The area I'm talking about is the area directly opposite of the core itself. Why not use non-conductive thermal epoxy to glue a heatsink on the backside of the videocard, right where the core is?

An example of something like this is the eevga 7800 gtx KO ACS card

Backside of videocard

The heatsink in the middle of the pic is on the underside of the core. The only difference between this and my idea is the fact that the back of my videocard is just PCB, not black metal. Also would a thermal pad type of thing be better? You would have to put a bunch of epoxy on the board to get good contact

I was wondering if this was a good idea, or would i be destroying my videocard?

 

[BassBomb]

i know what ur talkin about.. i wanted to do the same thing on my power circuitry for the top of my 6600GT.. two small chips putting out a lot of heat..

i had ripped an old heatsink off a intel 8 mb video card, but i didnt hvae any paste or anything to put it on, just sitting it on top did little

good luck though!

what card do you have?

 

[EvilAgryBob]

I have a 6800gt. Right now I have a backplate on the card because i have an arctic cooler on it. I took some really thick thermal pads and put them on the backplate and layed a heatsink on them. I don't know wether the thermal pad are non conductive though

I am going to get an EVGA 7900gt, and I read that the fan gets pretty loud when the card is working hard. I was planning to try it on the 7900gt. The only problem is that the back of the 7900gt doesn't have a backplate, and i don't want to buy another arctic cooler, so i was thinking about epoxying it.

 

[morgash]

hey man

already done this type of thing so here is the thread where i explained it
My Radeon Thread

Alos took the heatsink from my geforce PCX 5750 and glued it to the backside for active RAM cooling, then glued a Athlon XP heastsink to the front sinde for active GPU and FAT ramsinks for RAM. got the clocks from 425/500 stock to 675/750 where powerstrip wouldnt let me go any higher lol

 

[EvilAgryBob]

so do you think supergluing or thermal epoxying the heatsink directly on the circuit board would be safe?

Thanks for the link