Minimum: OS *: Windows®Vista™ SP2, Windows®7 SP1 or Windows®8 or Windows®8.1 Processor: Intel™ 2.4Ghz or equivalent Memory: 2 GB RAM Graphics: NVIDIA® Geforce 450 or ATI® 6850 or higher (it must be able to manage Pixel Shader 4.0) with at least 512MB of display memory. DirectX: Version 10 Network: Broadband Internet connection Storage: 18 GB available space Additional Notes: Laptop versions of these cards are not fully supported. All OS are supported in 32 or 64 bit.Windows®Vista™ SP2 must be updated with KB 971644 (platform update to DX11)