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View Full Version : Ubuntu 12.04 Precise - 32 bit app 64 bit os



mailc
July 9th, 2012, 02:40 PM
On a Samsung laptop 64 bit with Windows 7 Home Premium I installed Ubuntu 12.04 Precise for a dual boot.
Both work fine.

But by mistake I installed Precise ver 32 instead of ver 64.

Should I re-install Precise? What would be the advantage?
What is the disadvantage of keeping 32?
(Intend to keep Precise for the full 5 years! )
Thanks

oldfred
July 9th, 2012, 04:24 PM
Moved to recurring discussions as we get this question almost daily.

CPU has to be 64 bit, but unless you have something over 3GB of RAM it does not matter. But if you have more RAM it does matter performance wise. Only a very few things still are 32bit only and most of those will now run in the 64 bit verison.

Essentially says if you can use the 64bit kernel you should.April 2011
http://www.phoronix.com/scan.php?page=article&item=ubuntu_natty_pae64&num=1
https://help.ubuntu.com/community/32bit_and_64bit
Ubuntu 32-bit, 32-bit PAE, 64-bit Kernel Benchmarks Dec 2009
http://www.phoronix.com/scan.php?page=article&item=ubuntu_32_pae&num=1
Linus does not like PAE or 32 bit.
http://cl4ssic4l.wordpress.com/2011/05/24/linus-torvalds-about-pae/