Sapphire Radeon X1600PRO 256MB. Graphics processor: Radeon X1600, Maximum resolution: 2048 x 1536 pixels, Processor clock speed: 500 MHz. Graphic adapter memory: 256 MB, Graphics adapter memory type: DDR2, Memory bus: 64 bit. Interface type: PCI Express. DirectX version: 9.0, Shader model version: 3.0, OpenGL version: 2.0. Bundled software: Drivers & Utilities