OS: Windows 7/8/8.1 (64bit versions only) Processor: Intel Core i5-750 @ 2.6 GHz or AMD Phenom II X4 955 @ 3.2 GHz Memory: 4 GB RAM Video Card: NVIDIA GeForce GTX 460 or AMD Radeon HD5850 (1GB VRAM) Sound Card: Sound Card: DirectX 9.0c compatible sound card with latest drivers DirectX Version: 11 Hard Disk: 30 GB available space