Genuine Apple Video Card 512 MB 128 bit GDDR2 memoryPulled out from a working 2009 12 core Apple Mac Pro desktopOne Mini display port output and a DVI output.Both outputs support 2560x1600 resolutionCompatible with Apple Mac Pro 3.1(2008), 4.1(2009), and 5.1(2010 to 2012)