I have a 2012 MP (which is, FAI&P, identical to the 2010 version) and I'm considering upgrading at least one of my displays to 4K. Of course having a 4K display will do me no good if my MP is not able to drive it. So my question is: Are there any video cards out there that will drive a 4K display straight out of the box? By "straight out of the box" I mean just that: a card that is designed to work in a Mac Pro, not a PC PC card flashed by some kid in his mom's basement, that may or may not work next time Apple updates the OS. My current card is Radeon ATI 5870. P.S. Sorry if this is a question that has been asked before numerous time (I bet it has!). There is no forum search function that I can find.