Model： nVidia Geforce 8800GTS *2 Slot Fan Model(More Cool & Silent )
VRAM : 512MB 256-bit GDDR3
Pixel pipeline
Slot Compatibility : PCI-E (PCI Express)
ROM (Firmware) vevision： v3233
Memory Clock ： 970MHz (1940MHz)
GPU Clock： 650Mhz/1625Mhz(Core/Shader)
Hardware Compatibility ： All intel MacPro 2006 / 2007 Model EFI32 (MacPro1,1 / 2,1)
OS Compatibility ： OS X Leopard 10.5.2 or later OSX Lion 10.7 & OSX Mountain Lion 10.8 Supported !
Connectors ： 2x Dual-Link DVI Port
Display Modes ： Single or Dual DVI , VGA(W/DVI to VGA Adapter) **Extended Desktop, Mirrored Display
Maximum Analog Resolution ： VGA Support through Both DVI Ports (w/Adapter)
Maximum DVI Resolution ： Both Dual-Link DVI Ports - 2560 x 1600 @ 60hz (up to 2x 30" Apple Cinema HD Display)