OS: Windows XP SP3/Vista SP2/7 SP1/8 (both 32/64bit versions) Processor: Intel Pentium Dual-Core E2180 / 2.0 GHz or AMD Athlon64 X2 3800+ / 2.0 GHz RAM: 2 GB Hard Drive: 6 GB available space Video Card: nVidia GeForce 8800GT or AMD Radeon HD2600XT (512MB VRAM with Shader Model 4.0 or higher) DirectX: Version 9.0c