Sapphire Radeon HD 5770 1 GB DDR5 2DVI/HDMI/DisplayPort PCI-Express Video Card 100283-3L Maximum Resolution: 2560 x 1600 Bus: PCI-Express 2.1 x16 Core Clock: 850 MHz Chipset: Radeon HD 5770 Video Memory: 1GB DDR5 Chipset: Radeon HD 5770 Core Clock: 850 MHz Video Memory: 1GB DDR5 Bus: PCI-Express 2.1 x16 Maximum Resolution: 2560 x 1600 Support Microsoft DirectX 11, Shader Model 5.0 and OpenGL 3.2 Maximum Board Power- 108 Watt, Idle Board Power - 18 Watt