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Old 05-11-2018, 08:18 AM
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Join Date: May 2018
Posts: 12
Default CPU liquid cooler on a GPU?

Hello,

I have two identical EVGA GTX 780s (6mb) with one GTX 750Ti between them. The top 780 consistently runs about 10 deg. C hotter than the lower 780 during rendering.

Are there any easy-to-install, inexpensive liquid cooling solutions that I can slap onto this one card without having to liquid cool the whole rig?
I see lots of liquid CPU coolers, some as low as $70 and was wondering if anyone has tried putting one of these on a GPU? Or is the single round puck too small to make any real difference? (or simply not compatible).

The card generally tops out at 80-81 degrees. Is this considered hot, and if so, will it slow the card's performance or reduce its life?
If I open up the side panel, it still gets to 80 deg. but takes longer to get there.

The case has good ventilation, with two large fans in front (sucking in) and one at the back and one above. I added two small manually adjustable fans that I Jerry-rigged up against on the card (one against the end blowing cool air from the front of the case into the card and one against the edge of the card sucking warm air out the open side. Even with them cranked up (noisy), it only seems to go one degree cooler. It's odd that the lower card should be so much cooler even without extra fans on it. I'm guessing it is because the top card is closest to the CPU. I tested deactivating the other two cards in Octane to see if heat rising from the cards below makes any difference, but it didn't.Any recommendations will be most welcome!

Please help

I didn't find the right solution from the internet.

References:
https://render.otoy.com/forum/viewtopic.php?f=9&t=44996
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