Amazon.com: NVIDIA Quadro FX 4800 for Mac by PNY 1.5GB GDDR3 PCI Express Gen 2 x16 DVI-I DL, DisplayPort and Stereo OpenGL, DirectX (Boot Camp), CUDA, and OpenCL Profesional Graphics Board, VCQFX4800MACX16-PB :
TW386LL Apple nVidia Quadro FX 4800 1.5GB GDDR3 384-Bit Dual DVI-I + DVI-