For the first time we now have x64 Blazing Fast optimized builds of Firefox. We only had enough time and resources to build the Firefox 4.0 beta 7 version. The builds are available as a zip (install not required) format and the 7zip installer format (the regular Firefox installer). With these builds we also begin using and testing the x64 optimized builds with a large audience. Almost all your addons and themes should work with these builds (unless they have binary components). You will require 64 bit version of Flash and other plugins.
In case you find any issues with these builds please leave a comment here (also open for appreciation if any). These builds are PGO’d, compiler optimized Jemalloc builds. They took more than 16 hours to finish the build and ate up enormous harddrive and computing. Hope you like them. Download them from the Blazing Fast Firefox Download Page.