recommended system requirements:

Operating System: Windows 64 Bit

CPU: Intel Core i5-750, 2.67 GHz // AMD Phenom II X4 965

RAM: 8 GB

graphics card: NVIDIA GeForce GTX 560 // AMD Radeon HD 6950

storage: 20 GB

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minimal system requirements:

Operating System: Windows 64 Bit

CPU: Core i5-2500K 3.3GHz // AMD FX-8300

RAM: 4 GB

graphics card:  NVIDIA GeForce 8800 GTS // AMD Radeon HD 3850

storage: 20 GB