Hey guys, i have an EVGA GTX570 HD DS and im curious if my temps are normal for NVIDIA GPUs in general. I use a custom fan curve using EVGA Precision which gives me an idle temp of anywhere between 37-45 degrees C @ 1950 RPM. When I max out the card at 100% usage on stress tests and demanding games, its maxes at about 83 degrees at a 100% fan speed. Is this normal? Would it be worth getting one of the Arctic coolers here http://www.arctic.ac/en/p/assistant/vga/chip/101 ?