PowerColor HD 4770. Graphics processor: Radeon HD4770, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 750 MHz. Graphic adapter memory: 512 MB, Graphics adapter memory type: GDDR5, Memory bus: 128 bit. Interface type: PCI Express 2.0. DirectX version: 10.1, Shader model version: 4.0, OpenGL version: 3.0