HD6850 AMD ATI Radeon HD 6850 1GB GDDR5 PCIe 2.1 x16 HDMI Mini-DisplayPort DVI Graphics
Amazon.com: HP 680654-001 nVidia Quadro 2000D PCIe 2.1 x16, 1GB GDDR5 memory graphics card - With two DisplayPort and one Dual Link DVI-I connections : Electronics