Microsoft Windows 8 Professional Upgrade w/Rebate from NewEgg

Version: Upgrade System Requirements: 1 GHz or faster processor 1 GB RAM (32-bit) or 2 GB RAM (64-bit) 16 GB available hard disk space (32-bit) or 20 GB (64-bit) DirectX 9 graphics device with WDDM 1.0 or higher driver Packaging: Retail