Blazing Fast – Firefox Optimized Distributions
Here are some special builds of Firefox. These are not the official builds and do not display the official branding. They are optimized for particular hardware and OS combination.
What if Firefox was custom built to your particular CPU and even operating system? Wouldn’t it perform faster? The answer to that is a definite yes. The following builds of Firefox are optimized for particular CPUs to run specifically for Windows. They are also optimized according to the real world uses so that it performs the best on your desktop. Please refer to the legend below.
If you have requests for any particular architecture please feel free to contact me.
Downloads
Firefox 3.6 installers:
Firefox 3.6 zipped builds:
Firefox 3.5 branch installers:
Firefox 3.5 zipped builds:
Legend
- All builds are for Windows 2000 and above only.
- SSE builds are optimized for Pentium III/equivalent.
- SSE2 builds are optimized for Pentium IV/equivalent.
- The above list is sorted by versions in descending order i.e. the recent versions are at the top of the list.
- All builds have the full functionality as the official builds from Mozilla i.e. no loss of functionality as a result of any tweaks.
- Custom builds (with the compiler parameters of your choice) available at request.
For support please visit Binary Turf Forums

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hi,
thx for thhese builds. is it possible create with sse inst. set as well ? if so:
im trying to build a custom fox with sse3 for win7. but im lost atm.
i downloaded mozilla build, i have visual studio 2008. i have last sdk, i downloaded source code. im starting batch for vs9 shell is openig and thats all. so next ? what should i do from now on ?
I believe there’s no build of SSE3 possible yet. For specific instructions do read the Mozilla Build Documentation.
thank u for quick reply!
I was wondering, when new minor versions of Firefox come out will the built in updater work? Will it get the new build from your site?
Thank you for your great work! These builds really make a difference on my slowish laptop.
Currently the updater does not pull the newer builds from the repository. However we are working on that framework.
I am still running Blazing Fast release 3.5 on AMD Athlon 64 X2 Dual Core 4600+. Speed measured in startup gain compared to the regular release was about 15-20% faster (that’s effectively quite a bit of time with my extension bloated thing). Just downloaded 3.5.5. and look forward to give it a spin over the next couple of days.
Thank you very much for your efforts!
Glad you like them OAlexander!
Should be nice
Interesting stuff here
but wait, are these builds portable ? I do not want to overinstall my current firefox in case something goes wrong, why you don’t have portable versions like pigfoot does ?
You can install this version side-by-side with the real Firefox distribution without a problem. Also, all the extensions work with this one, so you shouldn’t have any trouble.
re: kaplan
Though SSE 3 and SSSE 3 are great technologies, I don’t believe there will ever be an option to build sse3 optimized versions of Firefox. This is because sse3 is designed for multimedia applications. Since Firefox doesn’t convert videos natively or do anything like that, sse3 is somewhat useless as an optimization for it.
Any idea when an optimized B5 will be released?
Where’s the old build especially firefox 3.6b2. I would really like to use this build since it is the only lates firefox to support aero peek in Windows 7 and with the enhanced speed of sse2 it can be said almost perfect.
Really, really appreciate your great work. Firefox runs faster than firefox!
looking forward to 3.6 RC1 optimized =)
Just to let you know: Latest 3.6 RC2 doesn’t start and reports a missing pgort80.dll
Ok I’m rebuilding it to see if the problem goes away.
Thanks!
BTW, I’ve double-checked, this problem only occurs with the SSE2 build, the SSE one is just fine.
Fixed with a rebuild.
Thanks a lot for 3.6 RC2.
You’re welcome Bora!
thanks for your good work, made my old P4 and Cel-M faster and more usable!
i’m really surprised that SIMD has not become standard – it’s been around since the Pent-MMX in 1995? P54?
could you please include a built-date in the file name or SVN #?
When Optimized FF 3.6 will be released ?
It’s already there. Please check this page again
But its 3.6 beta ?
On http://www.mozilla.com/en-US/ is full 3.6 , no beta, no RC