OS: Windows XP SP3 / Windows Vista SP1 / Windows 7 Processor: 1.8GHz Intel Core 2 Duo or equivalent AMD CPU Memory: 1 GB RAM for Windows XP / 2 GB RAM for Windows Vista and Windows 7 Graphics: 256 MB (with Pixel Shader 3.0 support) DirectX®: DirectX 9.0c August 2008 (included) Hard Drive: 15 GB Sound: DirectX 9.0c compatible Supported Chipsets: NVIDIA GeForce 6800 or greater; ATI Radeon X1600 Pro or greater. Please note that NVIDIA GeForce 7300, 8100, 8200, 8300, 8400, and 9300; ATI Radeon HD3200, and HD4350 are below minimum system requirements. Updates to your video and sound card drivers may be required.