Hi all, I recently bought a Mac Pro 4,1 (Eight Core 2.26 Nehalem / Early 2009) which I then firmware upgraded to 5,1. I invested in a Sapphire Radeon HD 7950 Mac Edition. My purpose is to use OS X for photo and video editing and Windows 7 for occasional gaming. I installed Windows 7 in Bootcamp, installed the GPU drivers for Windows and set up my favorite game, World of Tanks. The performance of the Mac Pro and the GPU should be more than enough. I was amazed to hear the CPU fans to start running very loud instantly when the game was opened (in the garage view, not even actually playing yet). The second I either hide/minimize the game or close it, the fans instantly quiet down. I tried SMC reset and also checked that there's no dust inside the Mac Pro. I can't believe there's nothing to be done with the fans but I'm running out of ideas. So, is there anything I can try or do I just have to accept that my Mac Pro runs awfully loud when just opening a game? Fortunately it doesn't get any worse when actually playing. I suppose it just can't..