Sapphire HD5770 1GB GDDR5 PCI-E. Graphics processor: Radeon HD5770, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 850 MHz. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR5, Memory bus: 128 bit. Interface type: PCI Express 2.1. Shader model version: 5.0, OpenGL version: 3.2, HDMI version: 1.3. Power requirements: 6pin