Connect3D Radeon X1900 GT 256MB. Graphics processor: Radeon X1900 GT, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 512 MHz. Graphic adapter memory: 256 MB, Graphics adapter memory type: GDDR3, Memory bus: 256 bit. Interface type: PCI Express. DirectX version: 9.0, Shader model version: 3.0, OpenGL version: 2.0