updated 04:56 pm EDT, Wed April 3, 2013
Supports CUDA, Windows, other platforms
EVGA has announced the GeForce GTX 680 Mac Edition, a new video card for the Mac Pro. The hardware uses 2GB of GDDR5 RAM, and includes four outputs: HDMI, DisplayPort 1.1, and two dual-link DVI connections. The card can also be used alongside Boot Camp and/or Windows, and supports standards including OpenCL and CUDA, which allow a video card to handle non-graphics tasks.
No date or official pricing for the add-on has been announced, but Newegg is selling it for $600 and claiming an April 8th launch date. The card requires a Mac Pro from 2008 or later with PCIe 2.0, and a copy of OS X 10.8.3.