Windows OS:Â Windows Vista / 7 / 8 / 8.1 Processor:Â Intel Core 2 Quad Q6600 @ 2.50Ghz or equivalent Memory:Â 4 GB RAM Graphics:Â nVidia Geforce 460 1GB or ATI Radeon HD 6850 1GB DirectX:Â Version 9.0c Hard Drive:Â 4 GB available space Sound Card:Â DirectX 9 Compatible Audio