Diamond Multimedia Viper Radeon HD 3870. Graphics processor: Radeon HD3870, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 825 MHz. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR3, Memory bus: 256 bit. Interface type: PCI Express x16. DirectX version: 10.1, Shader model version: 4.1, OpenGL version: 2.0. Minimum processor: Intel 2.0 Celeron, Pentium Intel Duo, AMD 3800+, 2.0 GHz, Minimum RAM: 1024 MB, Minimum hard disk space: 480 MB