OS: Windows XP SP3, Windows Vista SP2, Windows 7 SP1 Processor: Intel Pentium 4 (or equivalent) running at 2.4GHz or greater; AMD Athlon 64 (or equivalent) running at 2.4GHz or greater Memory: 1.5 GB or greater Hard Disk Space: 1.5 GB Video Card: NVIDIA Geforce 6800 Ultra (256MB) or ATI Radeon X1950 PRO (256MB) or greater Sound: 100% DirectX9.0c compatible sound card and drivers DirectX®: DirectX June 2010