Apple GT 120 512MB Graphics with Mini Display Port and DVI
Compatible with Mac Pro 2009, 2010, 2012 4,1 and 5,1
Compatible with Apple Mac OS Snow Leopard or Mac OS Lion, Mountain Lion
NVIDIA Mac OS Certified DRIVERS
https://www.nvidia.com/download/driverResults.aspx/89537/en-us/
NOTE: There is no Apple Logo known as Boot Screen during power up but otherwise works fully functional.
FOR PROFESSIONAL USERS WITH LOGIC PRO, FINAL CUT STUDIO 5,
Compatible with MAC PRO with MacOS Snow Leopard 10.6, Lion 10.7, Mountain Lion 10.8 SOFTWARE ONLY