OS * Windows XP SP3/Vista/Win 7
Processor 2.3 GHz Quad Core processor
Memory 2 GB
Hard Disk Space 20 GB free
Video Memory 512MB
Video Card NVIDIA GeForce GTX 560 / ATI Radeon HD 5850
Sound DirectX 9.0c Compatible
Other Requirements 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)



