XFX Radeon HD 4550, Radeon HD 4000 Series. Graphics processor: Radeon HD4550, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 625 MHz. Graphic adapter memory: 1024 MB, Graphics adapter memory type: DDR2, Memory bus: 64 bit. Interface type: PCI Express 2.0. DirectX version: 10.1, Shader model version: 4.1, OpenGL version: 3.0. Depth: 70 mm, Height: 19 mm, Width: 168 mm