You could try adding additional fans to your system to lower the load on the GPU funs, then they could run at slower speeds. You should just make sure your VRM temperatures are in check too - some GPUs have sensors for the VRMs and their temperatures will show up in GPU-z. I'd try and keep VRM temps below 80C.
You could also try downvolting your card - that way it would take less power, and the fans could run slower too.
How about Watercooling my GPU?
Watercooling can still go to dangerous temperatures. Keep this in mind.
Oh really? You've got proper answers here but I do wanna show off this... If you're into it, and you can get a couple of el-cheapo cpu water-cooling units, closed loop ones, you can get some very effective cooling happening, which translates to some ripping overclocking.
Here's my setup. The hardest thing to cool was the VRM's which were running 20 deg hotter than the core,
note the fan array and heat-sink.So how does it run? I can't even get CLOSE to 55 deg on the 7950! CRANKED!
http://i633.photobucket.com/albums/uu53/acatphoto/Tech/Benchmarks/7950-1200-1600.jpghttp://s633.photobucket.com/user/acatphoto/media/Tech/7950-1240-1740-Firestrike.jpgI picked up an R9-290 a couple of weeks ago for just over $200 Can. Buddy must have thought he was getting rid of a lemon because it was IDLING at 80C. After slapping a block on I now have a 290 that'll do 1150/1500 and stay under 60C. Sweet!
