It's easier to use, more flexible, and offers the best PC entertainment experience. Loaded with all the easy-to-use entertainment features of Home Premium and the business capabilities of Professional, Windows 7 Ultimate is the most powerful and versatile edition yet.Features:

• Help protect data on your PC and portable storage devices against loss or theft with BitLocker
• Supports many Windows XP productivity applications in Windows XP Mode
• Connect to company networks easily and more securely
• Share photos, videos, and music across your existing home network
• Watch, pause, rewind, and record TV on your compatible PC
• Save time with faster start-up, shutdown, sleep and resume
• Find virtually anything on your PC just by typing a word or two with Windows Search
• View and switch among all your open windows easily with Live Taskbar Previews
• Connect wireless devices to your existing network with ease
• Enjoy a faster, easier and safer web experience with Internet Explorer 8
• Work with any of the 35 different languages at any time
• Includes both the 32 and 64-bit versions of the operating system.

System Requirements: 1 GHz or faster 32-bit (x86) or 64-bit 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; Internet access. To confirm your upgrade system requirements, download and run the Windows 7 Upgrade Advisor from Microsoft to see if your PC can run Windows 7.