Sapphire RADEON™ X1900 GT. Graphics processor: Radeon X1900 GT, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 575 MHz. Graphic adapter memory: 256 MB, Graphics adapter memory type: GDDR3, Memory bus: 256 bit. Interface type: PCI Express. DirectX version: 9.0c, Shader model version: 3.0, OpenGL version: 2.0