Windows Internet Explorer 9 delivers web sites and applications that look and perform like native PC applications through the power of Windows.

• Fast: Internet Explorer 9 is all-around fast. Designed to take full advantage of your PC’s hardware through Windows, Internet Explorer 9 delivers graphically rich and immersive experiences that are as fast and responsive as native applications installed on your PC.
• Clean: Internet Explorer puts the focus on the Web sites you love with a clean look and increased viewing area that makes your Web sites shine. Intuitive and seamless integration with Windows 7 provides one-click access to Web applications pinned directly to your Taskbar.
• Trusted: Internet Explorer is the trusted way to the Web because it has a robust set of built-in security, privacy and reliability technologies that keep you safer and your browsing experience uninterrupted.
• Interoperable: Support for HTML5 and modern Web standards architected to take advantage of the GPU means that the same mark-up not only works across the Web, but runs faster and delivers a richer experience through Windows and Internet Explorer 9.

Refer to below links:

 Windows Internet Explorer 9 Beta for Windows 7

 Windows Internet Explorer 9 Beta for Windows 7 64-bit Edition and Windows Server 2008 R2 64-bit Edition