Hi, I notice that when using my iMac under OSx it gets hot to touch. Swapping to windows 7 I see the CPU is at 75C, and the GPU is at 70C!! Under Windows for "Day to Day" operations I run the fans at 2000 2000 and 1500 and this gives 50C on the i7 and 45C on the ATI. When running an Overclock of 1075/750 I increase the fans to 2300 2300 1800 and the GPU never goes over 67 Degreees. Is it normal that Mac OSx runs at such high temperatures? I don't like heat and don't care about fan noise, so just always run with the fans on a big higher under windows, but I was really surprised by 70C on the GPU idle! Any comments and advice is welcome. Is there a MacFan app for the Mac OSx too?