Sapphire HD 4870. Graphics processor: Radeon HD4870, Maximum resolution: 2560 x 1600 pixels, Processor clock speed: 750 MHz. Graphic adapter memory: 1024 MB, Graphics adapter memory type: GDDR5, Memory bus: 256 bit. Interface type: PCI Express 2.0. DirectX version: 10.1, Shader model version: 4.1. Minimum system requirements: Cd-ROM, Minimum RAM: 1024 MB, Minimum system power supply: 500 W