HP Nvidia Quadro 4000 2GB GDDR5 DVI Dual DisplayPort PCI-Express 2.0 x16 Graphics Video Card 707253-001.Nvidia Model Number: Quadro 4000HP Part Number: 707253-001Compatible Part Numbers: 608533-004 180-12007-1005-A02Specifications:CUDA Cores: 256 GigaFlops (Single Precision): 486.4 GigaFlops (Double Precision): 243.2 Memory Configuration: 2GB (2048MB) Memory Interface: GDDR5 Memory Interface Width: 256 BIT Memory Bandwidth: 89.6GB/S OpenGL: 4.4 Physical BUS Interface: PCI-E 2.0 X16 Certified For Windows 7: YesSLI Support: Yes Maximum Display Resolution Digital: 2560 x 1600 at 60HZ Maximum Dual Link DVI Resolution: 3840 x 2400 at 24HZ Ports:1 Dual Link DVI-I 2 DisplyaPortsMaximum Power Consumption: 142W Cooling System:1 Passive HeatSink1 Fan