Even the GTX 680 works out of the box. No modification necessary at all with Mountain Lion 10.8 (see attachment).
I use maya 2012 and the funny thing is that I first installed Mountain Lion to actually start using the drivers (I did not want to experiment with hacked drivers in Lion) and my AMD 5870 was FASTER with maya. The viewport handled faster and it was just not an impression. The Frames per Second (FPS) marker was increased while I used maya normally (which uses OpenGL drivers).
After I put in the 680, the Mac was faster still. Now, when I use it with boot camp it is just faster than a 7870 I had lying around and used only now and then. This is for both maya and playing Starcraft. Meaning performance in Mac OS X OpenGL is still behind Windows 7 Direct X AND OpenGL, if that comparison seems appropriate at all to you. (To me it is a little unfair, but it gives an idea where things stand).
As mentioned in multiple messages, we can actually look forward to drivers getting better!
My only complaint: The Mac Pro CAN'T use a Card that draws more juice than a reference 680. You need to start hacking another power supply for it. Oh well, can't have it all!
EDIT: One thing I forgot to mention and it is a little annoying but expected. The hackers of videocards in other forums had advised that the new drivers would only support 2 screens in any configuration you can use. I sadly confirmed this as in Windows I could use three ports: (DVI, DVI and DisplayPort) and when I switched back to Mountain Lion, only one DVI and DisplayPort were active. I disconnected the DisplayPort and the second DVI came back to life. As I said, this, I believe is to be expected, as it is my understanding the driver only supports 2 screens at any one time. Which is annoying since the card can support them![]()
Thanks for the update. I will probably be getting the 670 soon after mountain lion is released. Do the fans behave properly under osx? meaning that they run at normal speed and will speed up if pushed. Also, are they just as quiet as the 5870 or 5770?