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Firefox 49 will not support CPUs that do not have the SSE2 extension


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#1 JohnC_21

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Posted 14 October 2016 - 06:30 PM

This may have already been posted but I just wanted to bring it up again as I was doing a clean install of XP and ran into the issue. My CPU is one of the older Athlon XP's that does not have the SSE2 extension. Firefox 49 will not support these CPU's. Therefore you will be open to possible security vulnerabilities that are found in future releases of Firefox. Chrome dropped support for these CPU's months ago. The extended support release can still be downloaded that supports these CPUs but support will end in March 2017.

 

https://support.mozilla.org/en-US/kb/your-hardware-no-longer-supported


Edited by hamluis, 14 October 2016 - 06:38 PM.
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#2 buddy215

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Posted 14 October 2016 - 08:27 PM

To add to what John has posted....From the web:

SSE2 was introduced into Intel chips with the Pentium 4 in 2001 and AMD processors in 2003. Most computers produced in the last several years are equipped with SSE2. If you are unsure about your particular computer, you can determine SSE2 support by:

Windows: A free download, CPU-Z, is available from CPUID that will indicate if SSE2 is present on your system or not.

http://www.cpuid.com/softwares/cpu-z.html

OS X: All Intel Macs are equipped with SSE2

Linux: From a terminal, run “cat /proc/cpuinfo”. “sse2” will be listed as one of the “flags” if SSE2 is available.

 

Hey John...looks like you may have a museum quality/ eligible computer. :)


“Every atom in your body came from a star that exploded and the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics...you are all stardust.”Lawrence M. Krauss
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#3 JohnC_21

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Posted 14 October 2016 - 08:44 PM

To add to what John has posted....From the web:

SSE2 was introduced into Intel chips with the Pentium 4 in 2001 and AMD processors in 2003. Most computers produced in the last several years are equipped with SSE2. If you are unsure about your particular computer, you can determine SSE2 support by:

Windows: A free download, CPU-Z, is available from CPUID that will indicate if SSE2 is present on your system or not.

http://www.cpuid.com/softwares/cpu-z.html

OS X: All Intel Macs are equipped with SSE2

Linux: From a terminal, run “cat /proc/cpuinfo”. “sse2” will be listed as one of the “flags” if SSE2 is available.

 

Hey John...looks like you may have a museum quality/ eligible computer. :)

It's an old emachines T3065 from about 2002. I have a cobbled gateway tower with an old 486 motherboard running Windows 98SE. It's built like a tank. Not my PC but like the one in the image.

 

gateway%202000.jpg



#4 lti

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Posted 15 October 2016 - 05:30 PM

I saw this a few days ago when Firefox wouldn't start after updating. The updater doesn't make sure the computer meets the minimum requirements. I also still use an Athlon XP, but I primarily run Ubuntu (minimal install - almost Lubuntu) on it. The Linux version of Firefox doesn't require SSE2 yet.



#5 JohnC_21

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Posted 28 October 2016 - 12:33 PM

Just an update. Firefox on Ubuntu successfully updated to 49 on my Athlon CPU with no SSE2 extension. This is a dual boot system with XP.






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