Minimum system requirements  

OS: Windows XP, Windows Vista or Windows 7
Processor: 2.8 GHz dual core
Memory: 1.5 GB RAM (Windows XP) / 2 GB (Windows Vista and Windows 7)
Graphics: NVIDIA GeForce 8000 series or ATI Radeon HD 2000 series or better
DirectX®: DirectX 9.0c
Hard Drive: 16 GB