Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Will Firefox, apparently like Chrome, be ceasing updates for computers without SSE2 support?

  • 7
  • 6
  • 1 view
  • Nzaghachi ikpeazụ nke Ian.F

more options

Firefox is my chosen browser, but for web design purposes I also have Google Chrome. I have however, like others, begun to receive a message from Chrome stating that very soon my computer will no longer receive updates because its hardware is no longer supported. Chrome like, Firefox 28.0 - that I have - states a minimum CPU requirement of Pentium 4 or better: Firefox has specified this much since as I recall 2011, but my old laptop, which I use for almost all my computer activities, including web design, uses a Pentium III Mobile and runs Firefox perfectly well. The specific concern with Chrome, however, which is now I see specified for Firefox 28.0, is a CPU that supports SSE2: my laptop's CPU supports only SSE (and MMX), but as I say works perfectly well with FF28.0. So, will FF be ending support for computers of my harware specification (SSE rather than SSE2 or better)?

Firefox is my chosen browser, but for web design purposes I also have Google Chrome. I have however, like others, begun to receive a message from Chrome stating that very soon my computer will no longer receive updates because its hardware is no longer supported. Chrome like, Firefox 28.0 - that I have - states a minimum CPU requirement of Pentium 4 or better: Firefox has specified this much since as I recall 2011, but my old laptop, which I use for almost all my computer activities, including web design, uses a Pentium III Mobile and runs Firefox perfectly well. The specific concern with Chrome, however, which is now I see specified for Firefox 28.0, is a CPU that supports SSE2: my laptop's CPU supports only SSE (and MMX), but as I say works perfectly well with FF28.0. So, will FF be ending support for computers of my harware specification (SSE rather than SSE2 or better)?

Asịsa ahọpụtara

I don't believe there's any difference in the feature set; it's just that without SSE2 performance suffers.


Others who happen to come across this thread should know that SSE2 was first introduced by Intel with the Pentium 4 back in 2001. AMD first added it back in 2003. The latest version of Windows won't even run without it.

In short, if you bought a computer in the last decade, its CPU probably supports SSE2. You can check using the CPU-Z utility.

Gụọ azịza a na nghọta 👍 0

All Replies (7)

more options

A "Pentium 4 or newer processor that supports SSE2" is recommended, not a strict requirement. The PC hardware requirements haven't changed since Firefox 4.0, released on March 22nd, 2011.

No plans to change that, as far as I can see.

The only reference I can find to this change being proposed was around the time Firefox 4 was released. Given that it hasn't happened yet, and Firefox 29 is right around the corner, I'd say there's no need to worry about it in the immediate future.

more options

Gingerbread Man, hi.

Thanks for replying and for your thoughts. Do you by any chance know whether or not certain features of Firefox are or will be unavailable to computers without SSE2 support even if certain updates, e.g. security updates, continue to be provided? One would hope that Mozilla/Firefox would give notice of this, but you never know.

more options

Asịsa Ahọpụtara

I don't believe there's any difference in the feature set; it's just that without SSE2 performance suffers.


Others who happen to come across this thread should know that SSE2 was first introduced by Intel with the Pentium 4 back in 2001. AMD first added it back in 2003. The latest version of Windows won't even run without it.

In short, if you bought a computer in the last decade, its CPU probably supports SSE2. You can check using the CPU-Z utility.

more options

Thanks Gingerbread Man. Thankfully, so far, I have not noticed any deterioration in performance, but I am nevertheless aware of the limitations of my old laptop: it is, however, very well built, very reliable, which is part of the reason, besides money, I am loath to buy a new model.

more options

Gingerbread Man, hi.

Can I just ask you one more question on this thread. I am now using FF 29.0.1, but I am concerned that if I update at this point I might get a version of FF that does not work on my computer and as a result I also lose access to all my bookmarks.

So, my question is, that if a new version of FF comes out that is not supported by my CPU (without SSE2 support) will Mozilla ensure that if I attempt to download it that it does not do so for reasons of incompatibility? (I have now, as a precaution, disabled automatic updates.)

more options

Ian.F wrote:

I am now using FF 29.0.1, but I am concerned that if I update at this point I might get a version of FF that does not work on my computer

No need to worry. The current version is Firefox 30.0. I've tested Firefox 33.0a1 (2014-06-17) on a computer without an SSE2 processor and it works fine.

Ian.F wrote:

if a new version of FF comes out that is not supported by my CPU (without SSE2 support) will Mozilla ensure that if I attempt to download it that it does not do so for reasons of incompatibility?

Maybe. There are no plans to drop non-SSE2 support, so I can't say for sure how it would be handled. Again, the system requirements page and maybe the Future Releases Blog are the places to watch for any changes.

more options

Gingerbread Man, hi.

Thanks for replying: what you say helps.

As you may know, Google Chrome has started sending out messages to computers with non-SSE2-supported CPU's noting that the user's computer hardware is no longer supported and soon will no longer receive updates, so to this extent I would not have to worry that an incompatible version of that browser will be downloaded to replace the existing usable one (I only actually use Chrome for testing purposes so I am not too concerned there anyway). I was hoping that FF might adopt the same straight-forward approach. For now I will update to FF30.0. Many thanks.