Sapphire Radeon X1550 256Mb. Graphics processor: Radeon X1550, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 550 MHz. Graphic adapter memory: 256 MB, Graphics adapter memory type: DDR2, Memory bus: 128 bit. Interface type: PCI Express. DirectX version: 9.0, Shader model version: 3.0, OpenGL version: 2.0. Minimum system requirements: Pentium 4/III/II/Celeron, AMD K6/Duron/Athlon/Athlon XP