4 GHz Pentium 4 or Athlon 64 3600+Memory: 1 GB (2 GB for Multiplayer)Graphics: Graphics adapter supporting PixelShader 2.0 and 128 MB ram, at least GeForce 7600 or Radeon X seriesDirectX®: 9.0cHard Drive: 2 GB of free spaceSound: DirectX 9.0c compatible sound card