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

I'm not sure as to what architecture of ubuntu go for... either 32 bit or 64 bit. I'm not sure if to go with the 64 bit since I have 12gb of RAM, so that with 64bit it will cover the 12gb.

Also I would like to know what are the disadvantages of each of them, either 32 or 64. Thanks in advance! :)

Community
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codeninja
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2 Answers2

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I prefer x86_64. No workarounds to support +4gb of RAM. With 64-bit it is possible to give more than 2GB of RAM to a single process(might be useful in virtualization). And now most of software support 64-bit architecture, unlike it was a couple of years ago. And the performance is better. If you use native 64-bit software, it is sometimes significantly better. http://www.phoronix.com/scan.php?page=article&item=ubuntu_1210_3264

123RaZoR321
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  • Thanks for the key detail! Now.. Once I finish downloading the ubuntu 12.10. I made a 55gb partition which is NTFS formatted. How do I install linux on that partition? Or should I do something else? – codeninja Oct 22 '12 at 13:33
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Advantages and disadvantages of 32-bit:

  • All software supported
  • Better for gaming because game only use not more than 1GB memory
  • Only cover 3.2 GB (But on PAE cover 64 GB)

Advantages and disadvantages of 64-bit:

  • Use 64-bit software, it is difficult to search 64-bit software.
  • Cover more than 4GB memory
  • Better for virtualization (if you need)
  • Use more memory than the 32-bit

I prefer 32-bit to 64-bit because 32-bit application / software is wide-supported. Then on PAE, Ubuntu can cover all of your memory.

lambda23
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    If you use PAE 32-bit (12.04 and 12.10 I think are PAE only), you can use the full 12GB.

    And if you need any 32-bit specific software, such as wine, the multiarch support in Ubuntu should make it mostly easy to install the needed libraries to run them. There are a few exceptions to this rule of course, particularly in the area of plug-ins and loadable runtimes for various applications. However, it is generally not a problem.

     – dobey Oct 22 '12 at 13:05