Product Detail Chipset: nVidia GeForce 8400GS; Engine Clock: 567 MHz Video Memory: 512 MB DDR2; Memory Interface: 64-bit Bus: PCI-Express 2.0 x16; RAMDAC: 400 MHz; Max. Resolution: 2560 x 1600 Connectors: VGA, DVI-I; Thermal: Heatsink Support nVidia PureVideo HD Technology; Support HDCP - High-bandwidth Digital Content Protection; Support Microsoft DirectX 10 and OpenGL 2.1 . The "ECS nVidia GeForce 8400GS 512 MB DDR2 VGA/DVI PCI-Express Video Card NS8400GSC-512VS-H - Retail" is best product for you. We recommended ECS nVidia GeForce 8400GS 512 MB DDR2 VGA/DVI PCI-Express Video Card NS8400GSC-512VS-H - Retail