The white Sapphire HD 7950 Mac Edition was spotted at CeBIT and now Sapphire is officially releasing the card. The card still is more or less a reference design with an 800MHz core clock and 3GB of GDDR5. As far as connections go you have 2x mini-DisplayPort, 1x HDMI and 1x dual-link DVI.
The card is compatible with Apple Mac Pro models from 2010 and a later with an available PCI-Express x16 slot. The card does require power via two six-pin PCIe power cables, they are included. One interesting thing about this card is that it can be used on Windows machines as well. It comes equipped with a simple dual BIOS switch that allows you to switch it from Mac and Windows modes.
No word yet on pricing although we have heard the $450 MSRP flying around. We were unable to find the card for sale.