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What is the difference between 32-bit and 64-bit and which should I choose?

After using Ubuntu 12.10 for awhile on a separate computer, I decided to dual boot on my windows machine. The only bad thing is that I do not know which version of Ubuntu 12.10 to use 32bit or 64bit. I have been using 12.10 on another computer but it was as 32bit version and people have been saying that some hardware might not be supported in 64bit.

My build is: -i5 3570k -nvidia 560ti -8gb ram -Asus mobo -Two drives (320gb and 1tb)

Any help on which version to use is greatly appreciated

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marked as duplicate by Jorge Castro, Eric Carvalho, Uri Herrera, gertvdijk, Stephen Myall Feb 5 '13 at 9:53

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With your CPU architecture and your 8GB ram go for the 64bit version.

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Would going with the 64bit version deny me some uses that are in 32bit? –  user128638 Feb 5 '13 at 1:40
    
Well, chances are that some software wont run on 64bit platform (although things are improving). For instance:I wanted to run GuitarPro. Its propriatery software which is only released in a 32 bit version. If you know of any specific software you want to run (especially Prop. Software) I would check if it will run on 64 bit. –  matv1 Feb 5 '13 at 2:09
    
Thanks for the help and quick reply but I'm just going to go with 32bit since some of my software does not run in 64bit. –  user128638 Feb 5 '13 at 2:12
    
32-bit libraries and programs generally work fine on the 64-bit version of Ubuntu. Maybe you could boot the PC from a live USB and see if your software runs? –  Eliah Kagan Feb 5 '13 at 2:26
    
I'll go try that but for another question, What is the pro of going with 64bit instead of 32bit? –  user128638 Feb 5 '13 at 2:31
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