Hello! Help please! I just installed the GTX 680 Mac edition in my 2009 Mac Pro and it seems to perform worse than my old ATI HD 4870! Performance in Photoshop seems worse, and all system animations are very sluggish, even bringing up the dock. Another thing, when I turn on the system it stays silent for like 5 seconds then it chimes and boots, while before I could hear the fans spinning for 2-3 seconds before the chime. What's going on?! Thanks for the help!