MINIMUM REQUIREMENTS
OS: Windows XP SP3
Processor: 2.4 GHz Dual Core Processor
Memory: 2 GB XP, 2 GB Vista
Hard Drive: 13 Gb free
Video Memory: 256 MB
Video Card: nVidia GeForce 8500 / ATI Radeon HD 2600
Sound Card: DirectX 9.0c Compatible
RECOMMENDED REQUIREMENTS
OS: Windows XP SP3/Vista/Win 7
Processor: 2.3 GHz Quad Core Processor
Memory: 2 GB
Hard Drive: 20 Gb free
Video Memory: 512 MB
Video Card: nVidia GeForce GTX 560 / ATI Radeon HD 5850
Sound Card: DirectX 9.0c Compatible
OTHER REQUIREMENTS & SUPPORTS
Initial installation requires one-time internet connection for Steam authentication; software installations required (included with the game) include Steam Client, DirectX 9, Microsoft .NET 4 Framework, Visual C++ Redistributable 2005, Visual C++ Redistributable 2008, Visual C++ Redistributable 2010, and AMD CPU Drivers (XP Only/AMD Only)