To find out we’ve put Firefox through a number of well known benchmarks and a few of our own to see what the differences are between the 32-bit and 64-bit versions.

With this long awaited release, the question now is, does the 64-bit Firefox perform any better than the 32-bit version? Since version 42, Firefox has an official 64-bit version that you can download and install instead of the 32-bit version, although it’s currently not available on the main Firefox download page and is a bit hidden away in the Mozilla release pages. Firefox was the only major browser to not have a 64-bit version, until recently. Internet Explorer has had a 64-bit mode for several years, Chrome also has a version that was released in 2014. A well coded 64-bit application should theoretically perform better and more efficiently than it’s 32-bit counterpart on a 64-bit operating system, usually at the expense of a bit more memory. There’s a lot to like about Firefox with the thousands of available add-ons, but also it’s had it’s fair share of problems with various performance and memory related issues over the years.Īn area where Firefox fell behind is making the browser a full 64-bit application to work better with 64-bit versions of Windows. It used to run Internet Explorer close for top Windows web browser but these days has slipped to distant third behind Internet Explorer and more recently Google Chrome. Mozilla Firefox has been around for over a decade and has built up a huge following of loyal users in that time.

Mozilla thunderbird 64 bit