Minimum: OS: Windows XP/Vista/7 Processor: 2.5 GHz Intel Pentium 4 / AMD Athlon 64 Memory: 2 GB Hard Disk Space: 4 GB free hard drive space Video Card: 512 MB NVIDIA GeForce 8800GS / ATI Radeon HD 3870 or better DirectX®: DirectX 9.0c Sound: DirectX Compatible