I spent most of the day looking at some lovely boot screens on a GTX670, but through countless revisions it crashed after the main drivers took over. Then I asked Netkas to get involved. BANG !!! GTX670 is now a Mac native card !!! We have boot screens and 4 displays running, just need to get PCIE 2.0 5GT/s figured out. Should be offering them up in 2 weeks or so. And then, sitting on the counter...a GTX680 and that silver thing...oh yeah, a GTX Titan. May be looking at a low power 640/650 option as well. Sadly, it now requires a 512K EEPROM as Apple has ENGORGED the rom to 288K. So a "solder only" operation. Thanks to Nvidia for writing drivers for their entire GTX6xx line. If there weren't drivers, these EFI cards would have nothing to offer. Let's hope the Titan driver comes soon. Quite a week, AMD 7xxx cards and now GTX6xx cards as native Mac cards.