Considering most people have decent amounts of RAM these days and also considering that Win7 Home Premium 64bit is the one you see on most pre-configured laptops and desktops these days. 64-bit is the future of computing – and one obvious benefit of running a 64-bit version of Windows is the fact it allows you to access more than 3.5GB of RAM, helping speed up your computer. Users of 64-bit machines also have another option, that's Waterfox, a version of Firefox that's optimized for speed on 64-bit systems. Users on older systems will find that the 64-bit browser loads faster and is much more responsive than 32-bit Firefox. Waterfox allows users to enjoy their systems' full potential. Users of Waterfox must have Visual C++ 2010 Redistributable Package (x64) installed. Waterfox should load faster than Firefox and it should also handle tabs smoothly.

Waterfox 9.0 includes these fixes/changes:

-Added Type Inference, significantly improving JavaScript performance
-Added support for querying Do Not Track status via JavaScript
-Added support for font-stretch
-Improved support for text-overflow
-Improved standards support for HTML5, MathML, and CSS
-Fixed several stability issues
-Fixed several security issues