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As a longtime user of Firefox, I couldn't pass up the opportunity to use a 64-bit version of it. I figured I'd give it a try and it's something I've been thinking of doing since I first used Windows Vista Ultimate x64. I honestly never heard of Waterfox until I read this article on Neowin. I installed it on my main PC (Windows 7 Ultimate x64) and I really like it. It definitely feels speedier than the standard 32-bit version of Firefox and things like Flash also feel faster. Another positive thing is that YouTube videos no longer crash my display driver. I assume that using a 64-bit version of Flash had something to do with it.

Anyway, if you have a 64-bit operating system and are open to the idea of using a 64-bit browser than Waterfox is for you. You can download it here alongside its prerequisites.

FAQ:

What is Waterfox?

Waterfox is a high performance browser based on the Mozilla Firefox source code. Made specifically for 64-Bit systems, Waterfox has one thing in mind: speed.

Why should I use a 64-Bit version of Firefox?

For some people with older systems, the 64-Bit version loads quicker and is much more responsive than the 32-Bit build. For people with newer systems, it allows them to use the full potential of their systems.

If there are any bugs, where should I report them?

Unfortunately, since this is a 3rd party build you cannot report any bugs and you?ll just have to hope that they get fixed in the next update by Mozilla.

Is my experience limited if I use a 64-Bit version of Firefox?

The major plugins such as Adobe Flash, Sun Java, Microsoft Silverlight all have supported 64-Bit binaries available.

How does it compare to 32-Bit Firefox?

In benchmarks, the 64-Bit variant of Firefox out-performs the 32-Bit variant. Also because this variant is being built specifically for Windows, there might be further performance increases.

Were there any optimisations made?

Yes, Waterfox was compiled with SSE, SSE2, x64 favoring and the following optimisation flags: /Og /Oi /Ot /Oy /Ob2 /Gs /GF /Gy

Do all my Add-Ons work?

Yes! Add-Ons work on any version of Firefox, on any platform.

I get a msvcr100.dll is missing error.

You must have the Visual C++ Redistributable file linked in the download page installed.

How do I fix the blurry font?

Type about:config in the address bar. In the filter at the top type gfx.direct2d.disabled. Change it from false to true.

http://waterfoxproj....ceforge.net/faq

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I've always wondered just how they produce these 64bit builds, since for a long time the main codebase wasn't 64bit safe. Currently 64bit builds are still slower at JS than 32bit builds, and no amount of compiler optimisations will fix that.

Mozilla still don't consider the 64bit builds ready for anything but developer usage, they still crash randomly and often crash in such a way that the OS never calls their crash handling code (So the bugs go unreported)

I've always wondered just how they produce these 64bit builds, since for a long time the main codebase wasn't 64bit safe. Currently 64bit builds are still slower at JS than 32bit builds, and no amount of compiler optimisations will fix that.

Mozilla still don't consider the 64bit builds ready for anything but developer usage, they still crash randomly and often crash in such a way that the OS never calls their crash handling code (So the bugs go unreported)

I guess that was the case in the past. I haven't tried the 64-bit Nightly builds so I don't know how stable they are over the 32-bit Nightly builds. So far though, Waterfox hasn't crashed once. Perhaps Mozilla finally got around to making Firefox 64-bit friendly. Here's an interesting article about Firefox 8 (64-bit): http://www.extremetech.com/computing/90546-firefox-8-x64-has-64-bit-browsing-finally-come-of-age

I've always wondered just how they produce these 64bit builds, since for a long time the main codebase wasn't 64bit safe. Currently 64bit builds are still slower at JS than 32bit builds, and no amount of compiler optimisations will fix that.

Mozilla still don't consider the 64bit builds ready for anything but developer usage, they still crash randomly and often crash in such a way that the OS never calls their crash handling code (So the bugs go unreported)

I still think Mozilla needs to kill the current code and start from scratch.

Agreed, especially with Google having such a nice clean product as Chrome.

Considering it's withstood the competition quite well, I'm guessing a lot of people would disagree with you.

I'd prefer it if Firefox was optimized for SSE2 like Chrome is, but it's not really a concern if the performance is there. (The 64 bit version will be, of course, since all x64 procs have SSE2.)

Quite a lot of snakeoil and even a surprisingly outright lie, in fact. It is designed in hardware so that x86 code takes zero performance hit when run on an x64 machine. None, period.

As for optimization, setting compiler flags can do little magic if the code is not applicable for it. I would guess that forcing the matter can even make it slower as the dedicated instructions become efficient only when used properly.

As for compatibility improvements that are at least evident, I've, for one, settled for Nightly (and temporarily the latest Tracemonkey if it decides to crash).

I've had Waterfox, Palemoon and Aya... whatwasit for some time, run lenghty benches, too. Results were inconclusive but not something to make an impression that either was better than the other. It is no question that both Chrome and Oprah is faster in most cases. Even IE9 holds up in certain test cases.

All in all, if it works for you, good. If it doesn't, however, better be sure that those loud promises of these custom compiles being the fastest and whatnot are full of very big holes.

It's disappointing to me that the Firefox devs are still waffling over how to do it properly.

Like, we know what we need to do this, and we are making plans to do it, but we don't actually want to do it.

Heh.

They're working on it (see here). Unfortunately, it isn't a high-priority feature.

I guess that was the case in the past. I haven't tried the 64-bit Nightly builds so I don't know how stable they are over the 32-bit Nightly builds. So far though, Waterfox hasn't crashed once. Perhaps Mozilla finally got around to making Firefox 64-bit friendly. Here's an interesting article about Firefox 8 (64-bit): http://www.extremetech.com/computing/90546-firefox-8-x64-has-64-bit-browsing-finally-come-of-age

Even up to the mid point of 2011 they still had random chunks of code that assumed 32bit OSs (Converting pointers to 32bit integer, etc.). As for the article, that's entirely made up, what I think happened is that somebody noticed Mozilla was running 64bit regression tests, and assumed that meant an official release was coming (Which it isn't for a while until they sort all the problems out)

I still think Mozilla needs to kill the current code and start from scratch.

There's no reason to do that, the incremental upgrades they're doing now are much better (Stopping the project for a year to rewrite vs. rewriting a component incrementally over a couple of releases)

...

I'd prefer it if Firefox was optimized for SSE2 like Chrome is, but it's not really a concern if the performance is there. (The 64 bit version will be, of course, since all x64 procs have SSE2.)

It already is.

Have been using waterfox for the last few weeks so far and absolutely no problems whatsoever (same with firefox), constantly kept open for about 10 hours a day and memory usage always around 450MB (high res image threads, about 1GB then).

It is a wee bit more snappier and smooth than firefox 10 I find.

I guess that was the case in the past. I haven't tried the 64-bit Nightly builds so I don't know how stable they are over the 32-bit Nightly builds. So far though, Waterfox hasn't crashed once. Perhaps Mozilla finally got around to making Firefox 64-bit friendly. Here's an interesting article about Firefox 8 (64-bit): http://www.extremete...lly-come-of-age

Been using x64 nightly for months now and has been as stable as the x32 builds sharing almost all the same bugs. No reason not to use it especially now that flash has an x64 plugin.

Well, you say that, but it doesn't explain the devs discussing it as if it isn't used much over here http://groups.google...=64-bit&lnk=ol

The only discussion I can see is about having less code paths (Firefox includes SSE optimised code paths and normal paths, a native 64bit build doesn't need the normal code paths since it can guarantee the CPU can do SSE). And as a side effect it also means the compiler can include SSE functions anywhere, not just in optimised areas (As is done currently due to how compilers work)

Edit: So the question is "Can we use SSE everywhere?" not "Can we use SSE?"

Been using Waterfox for a while now. Even if it's built by Mozilla, it's NOT Firefox, so it has to be better!! Have NEVER liked Firefox.

Can't say as I've never noticed it being any faster than any other browser. All browsers runs blazingly fast on my sytems and the day that some one says about how slow a browser is on their systems, is the day I should go over and fix their computer!

Palemoon, http://www.palemoon.org/ also has a 64bit version, but I use the 32bit version of that on my 32bit machines.

As far as Chrome, if I were to ever use that again, which isn't happening, it would be SRWare Iron, NOT Google Chrome crap!!

What about the Windows Media Player plug-in?

Unfortunately, 32-bit plugins won't work with Waterfox. It's up to Microsoft to release a 64-bit version of the WMP plugin. So far though, the major plugins work: Flash, Java, and Silverlight.

Unfortunately, 32-bit plugins won't work with Waterfox. It's up to Microsoft to release a 64-bit version of the WMP plugin. So far though, the major plugins work: Flash, Java, and Silverlight.

And even the 32-bit plugin hasn't been updated for years, what's up with that!?

The only discussion I can see is about having less code paths (Firefox includes SSE optimised code paths and normal paths, a native 64bit build doesn't need the normal code paths since it can guarantee the CPU can do SSE). And as a side effect it also means the compiler can include SSE functions anywhere, not just in optimised areas (As is done currently due to how compilers work)

Edit: So the question is "Can we use SSE everywhere?" not "Can we use SSE?"

In 32bit code, since we have to explicitly think and do work about every place where we want to do SSE2, and since it's a performance/size compromise, we end up not doing it in many places.

So yes, I know they use it to some degree, but from what I can tell not much.

Been using Waterfox for a while now. Even if it's built by Mozilla, it's NOT Firefox, so it has to be better!! Have NEVER liked Firefox.

Can't say as I've never noticed it being any faster than any other browser. All browsers runs blazingly fast on my sytems and the day that some one says about how slow a browser is on their systems, is the day I should go over and fix their computer!

Palemoon, http://www.palemoon.org/ also has a 64bit version, but I use the 32bit version of that on my 32bit machines.

As far as Chrome, if I were to ever use that again, which isn't happening, it would be SRWare Iron, NOT Google Chrome crap!!

It's based on the Firefox source code so aside from being 64-bit, it's virtually identical to the official 32-bit version.

And even the 32-bit plugin hasn't been updated for years, what's up with that!?

That's one of the issues of using a 64-bit browser. If you use Firefox with a lot of plugins, then Waterfox may not be good. Fortunately, I only use a handful of plugins and most of them have 64-bit versions.

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    • It certainly is a waste of time clicking it if you're not interested in Windows 11's development. If that were the case for you, you could easily ignore the headline and move on given the headline makes it clear that's what the article is about. Instead, you're contradicting yourself here calling it a waste of time yet clicking on the headline and commenting... If it were a totally different topic being presented than what's stated in the headline, then you'd certainly have a point, 'cause that's totally deceptive and unavoidable if not actually interested. However here, you can totally avoid it if you're truly not interested.
    • No, it did not work. I did not read the article. I saw the title in my Feedly feed and came to continue putting pressure about such titles on a website I used to love. In fact, based on your reply, it seems you think it's fine to visit click bait title articles to find out what it's about, to waste people's time. That's up to you, mate. I remember when news websites had pride in their content and therefore didn't need to resort to cheap tactics.
    • Nothing misleading nor deceptive about it, just sensationalized and catchy to grab reader's attention, and it's clearly working...
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