Mozilla has finally delivered a 64-bit version of Firefox. Firefox 43 for Windows, Mac, Linux, and Android went live.

The new browser is going to help protect your browser from malicious websites.

64 bit version speeds up the browser to access several more memory registers and help run Java Scripts faster.

Mozilla earlier launched 64 bit version for Mac and Linus but for Windows this is the first time.

It may work for Windows 7 and later releases of Windows Operating system.

https://blog.mozilla.org/futurereleases/2015/12/15/firefox-64-bit-for-windows-available/

 Valleyz