I had the old big silver Mac Pro, and while in theory it was all a standard graphics card slot, in reality you had to pay an extra ~$100 to get the "apple" vers

I had the old big silver Mac Pro, and while in theory it was all a standard graphics card slot, in reality you had to pay an extra ~$100 to get the "apple" version of any video card. I accidentally bought the wrong one once, spend like 2 weeks trying to like flash the firmware over, gave up and re-sold it on craigslist at a loss and bought the right one. (civ 5 still ran like crap)