My GTX 970 gets very hot at about 78-80 degrees during gameplay. I have the Zotac edition with 2 fans. I am considering to get a single radiator/fan AIO liquid cooler for my GPU. I have the Cooler Master 212 Hyper EVO for my CPU (i5 4590k) and it does a decent job of keeping the temps low. But when I play the Witcher 3 temps get very high. I think my cheapest option would be to install a single radiator cooler at the front of the case because my air cooler is already installed near the top. Would this work if I use one of those brackets from cooler master to install a cooler onto it? Would that void the warranty?