XFX ATI Radeon HD5770 1 GB DDR5 VGA/DVI/HDMI PCI-Express Video Card HD577XZNLC CrossFire ready DirectX 11 Ready Connectors: VGA; DVI; HDMIThermal: Fansink Memory Clock: 4.8GHzMemoery bus: 128bitBus: PCI-Express 2.1 x16 Chipset: Radeon HD5770GPU Clock: 850MHZ Memory: 1GB DDR5Maximum Resolution 2560 x 1600 Chipset: Radeon HD5770GPU Clock: 850MHZ Memory Clock: 4.8GHzMemoery bus: 128bitBus: PCI-Express 2.1 x16 Memory: 1GB DDR5Maximum Resolution 2560 x 1600 Connectors: VGA; DVI; HDMIThermal: Fansink CrossFire ready DirectX 11 Ready 500 Watts Minimum Power Supply Requirement