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I have a corsair h75 with the g10 bracket on my gtx980ti and it is unable to cool that thing. Gpu is constantly running in the high 70s with fans in push/pull running at max speed. I can feel that the radiator is hot and it does make sense - these aio coolers are generally designed for cpus and tdp there is usually around 100W. 980ti is 250w, so your 970 with a tdp of 145w might fare better, but, as previously mentioned, get a 140mm or bigger radiator to make it worthwhile.
The fans are stock, they are running off a splitter connected to a motherboard. Since the radiator is really hot to touch i doubt there is a problem with the contact. Perhaps the pump is running very slow, will have to check on that.Trying not to derail the OPs thread, but I had an H55 with the G10 before I got a X41. The 980 Ti @1500MHz (dual 8 pin power connectors) with the H55 got to 55C max with a single fan at 100% and a max of 52C with two identical fans in push/pull, so you might just have something wrong with your H75.
Bad contact between the GPU and cold plate, not enough power to the pump (had that happen with the X41 until I changed power connections), too little thermal paste on the GPU/cold plate (had that happen with my stock 980 T1 G1 and it hit 92C in under 30 seconds), pump/fans not running at full speed, different models of fan causing issues in push/pull (as in, not the exact same fans) - to name a few.
You can ask the folks on the Corsair forums, the sub forum is called Cooling. They can help you troubleshoot it. If it's busted, well, Corsair has a long 5 year warranty now - The Corsair User Forums - Powered by vBulletin
arestavo, how are your memory modules and all's temps without any cooling on them? Wouldn't they get too hot and burn up? I'm wondering what all has to be cooled with the hsf on the gpu.
VRAM and VRM heatsinks are a huge PITA to apply and have stay put - thermal tape just doesn't stick, even the good stuff doesn't work well.
Copper or not, it does it's job pretty well, kept my r9 270x's vrms from getting too hot, anyway (not that they really needed cooling). Of course, I got enzotech "forged copper" sinks. Don't know how they compare, but hacking them to 1/4th their size to fit the vrms was fun.Ha, that Chinese shit (the COSMOS copper VRAM heat sinks) probably isn't even copper. Probably copper colored sand filled plastic or some shit XD
I haven't looked at my 970 without the hsf it came with, but I'm wondering if it would somehow be possible to get the aio cooler on there then leave the rest of the hsf body in contact with all the VRAM and shit. I got to thinking about this when I took apart my old 560ti 448, lol. Definitely an idea I'll have to play with.
Edit:
I actually just now looked up the NZXT Universal bracket and it was not what I was thinking. I didn't realize it actually had a mount with a fan to help cool the rest of the card. I tried to check the compatibility thing and it basically just said it didn't know if it would work or not. I have an EVGA 970 SC