I use AfterBurner for my GPU temp monitoring but if the 66 degrees is your temp that is fine. If it is the 100+ listed under GPU #2 that is too high. I have a 7970 OC'ed to 1110 mhz and I have a custom fan profile set to keep it less than 78c (get artifacts above there on that clock). Would see if you can get a custom fan profile loaded.