Much of the talk on here at the moment about the new MacPros seems centred around the graphics cards gaming performance. As a photographer, this is of no interest to me and the base card (HD2600 I think?) in my 08 MacPro works just fine for me. However with the recent change over to mini display port by many high end monitor manufacturers, support for 10bit colour input has been brought to my attention. Do any of the new graphics cards support 10bit output or does Mac OSX even support this feature? Thanks in advance.