I have a mid 2010 MacPro 5,1. The video card died and the Apple store wanted $300+ to replace with the same 5770 card. I was hoping to upgrade the card for about the same price. The only official mac addition card I could find was the Sapphire HD 7950. The problem with that card is the driver does not support audio over any of the video ports. I am not a gamer and do light photoshop work and video encoding. The computer is also used as a media center which is why I need audio over the HDMI or mini displayport. After reading things here it looks like I could get a PC NVIDIA card which are much cheaper. Does the NVIDIA driver support audio over the video ports? The graphics card market is a bit overwhelming so I was hoping someone had suggestions of cards to look at. I would like to stay under $500 preferably less than $200. Like I said above I do mostly video and picture work not gaming. I also would like to stay with the stock power supply. Any help narrowing down my options will be greatly appreciated.