CLUB3D Radeon HD 2900 XT 512MB GDDR3 PCI-E. Graphics processor: Radeon X2900, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 740 MHz. Graphic adapter memory: 512 MB, Graphics adapter memory type: GDDR3, Memory bus: 512 bit. Interface type: PCI Express. Shader model version: 4.0, OpenGL version: 2.0. Minimum processor: Pentium/ Athlon, Minimum RAM: 128 MB, Minimum system power supply: 650 W