Minimum:
OS: x64 versions of Microsoft Windows Vista (SP2) with DirectX 11 update (KB971512-x64), 7 (SP1) and 8.1.
Processor: 2.6 GHz Intel® Core™ i5-750 or 3.2 GHz AMD Phenom™ II X4 955
Memory: 4 GB RAM
Graphics: NVIDIA GeForce GTX 460 or AMD Radeon HD5850 (1 GB VRAM)
DirectX: Version 11
Hard Drive: 4 GB available space
Sound Card: Integrated or dedicated DirectX 11 compatible soundcard
Recommended:
OS: Windows® 7 (SP1) / Windows® 8 / Windows® 8.1 / (64-bit only)
Processor: AMD Octa-Core / Intel Quad-Core processor running at 3.4 GHz (AMD FX X8 8350 or Intel Core i5 3570 or newer architectures are recommended)
Memory: 8 GB RAM
Graphics: AMD/NVIDIA dedicated with at least 2048MB of dedicated VRAM and with at least DirectX 11 and Shader Model 5.0 support. AMD Radeon R9 285 and NVIDIA GeForce GTX 670 and above are recommended graphic cards.
DirectX: Version 11
Hard Drive: 4 GB available space
Sound Card: Integrated or dedicated DirectX 11 compatible soundcard