Great choice versus stock and older cards. Good for editing thanks to large 1.5GB of ram. You can always change boot drive from system preferences/choose startup disk and Restart Mac. NO KERNEL PANIC OR RESTARTS LIKE OLD MAC OR FLASHED CARDS MIGHT CAUSE.*This card is capable of running 2 monitors at the same time, please make sure this card will work with your monitor configuration before purchasing No boot screen support, not a big deal for users mainly running one boot drive, video feed will register once your mac loads into osx. Strongly recommend 10.8 OSX or newer for better gaming and application acceleration performance.Verified working with Mac OSX 10.7 to 10.11 ONLY on Mac Pro 1,1-2,1.*Great for running 10.11 on Mac Pro 2006-2007, 100% compatibility.
