Operating system: Windows XP (SP3) / Windows Vista (SP1) / Windows 7 Processor: Intel Core 2 Duo 1.8 GHz / Athlon X2 64 2.4 GHz Memory: 2 GB Video: Radeon HD 2600 Pro / nVidia GeForce 7900 GS with 256 MB of video memory Sound Card: Sound device compatible with DirectX ® 9.0c Free space on hard disk: 7 GB