recommended system requirements:

Operating System: Windows 8 64 bit (with KB971512 Update)

CPU: Intel Quad-Core or AMD Six-Core

RAM: 8 GB

graphics card: AMD Radeon R9 290, NVIDIA GeForce GTX 760 3 GB

storage: 60 GB

DirectX 11

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minimal system requirements:

Operating System: Windows Vista SP2 64 bit (with  KB971512 Update) and above

Athlon II/Phenom II 2.8 GHz, Intel Core i3/i5 2.4 GHz

RAM: 4 GB

graphics card: ATI Radeon HD 5770 (1 GBTE), NVIDIA GeForce GTX 260 (896 MBYTE)

storage: 60 GB 

DirectX 11