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Thread: OS 32bit or 64bit

  1. #1
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    Smile OS 32bit or 64bit

    Hi there, I hope this is a simple question to answer. I am running Ubuntu 12.04 (LTS) 32bit. This is the OS I had downloaded before I upgraded my computer. I see that there is also a 64bit version, what is the difference between the 32bit and the 64bit versions. And my question is: should I upgrade to the 64bit? Also what advantages is there between 32bit and 64bit? So far this Ubuntu 12.04 (LTS) 32bit is working great!!!
    Thanks Larry

  2. #2
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    Re: OS 32bit or 64bit

    Certain intensive calculations such as video encoding, work somewhat faster on 64-bit. You can also natively handle 4GiB of RAM or more on 64-bit.

    Of course, 64-bit operating systems only work on 64-bit CPUs. Look up your CPU on Wikipedia and it will say if it is 64-bit or not. Most in the last six years are.

    You would have to reinstall Ubuntu to get 64-bit; not worth it in my opinion, just install 64-bit the next time you do a clean install of Ubuntu.
    I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.

  3. #3
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    Re: OS 32bit or 64bit

    should I upgrade to the 64bit?
    If you don't have 4GiB RAM or more installed there is no real need to change to 64bit.

  4. #4
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  5. #5
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    Re: OS 32bit or 64bit

    I don't think the upgrade would be worth having to reinstall, I agree with 3rdalbum...

  6. #6
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    Re: OS 32bit or 64bit

    Quote Originally Posted by omeomi View Post
    If you don't have 4GiB RAM or more installed there is no real need to change to 64bit.
    This is not true. As well as being able to handle more memory, 64-bit is significantly faster at any kind of hardcore number crunching (video or audio encoding, encryption, compression, etc).

    There's no reason to throttle a 64-bit chip down to 32-bit speeds.

  7. #7
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    Re: OS 32bit or 64bit

    How much RAM? Most say unless you have 3GB or more the 32bit is fine.

    Ubuntu 12.10: 32-bit vs. 64-bit Linux Performance
    http://www.phoronix.com/scan.php?pag...210_3264&num=1
    Assuming your hardware is x86_64 capable (basically any modern Intel/AMD CPU) and have at least 2GB of RAM, you really should be running the 64-bit version.
    Essentially says if you can use the 64bit kernel you should.April 2011
    http://www.phoronix.com/scan.php?pag...ty_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?pag...u_32_pae&num=1
    Linus does not like PAE or 32 bit.
    http://cl4ssic4l.wordpress.com/2011/...lds-about-pae/
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  8. #8
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    Re: OS 32bit or 64bit

    Quote Originally Posted by 3rdalbum View Post
    You can also natively handle 4GiB of RAM or more on 64-bit.
    I have 8 GiB of RAM and 32-bit PAE kernel, which handles entire RAM. PAE allows up to 64 GiBs of RAM. So, primary advantage of 64-bit OS is ability to allocate more than 2 GiB of RAM to single process. However, some software can be incompatible with 64-bit OS. And that's my primary reason to use 32-bit OS.

  9. #9
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    Re: OS 32bit or 64bit

    Quote Originally Posted by NilPointer View Post
    However, some software can be incompatible with 64-bit OS.
    Maybe a few years ago, but that's not a real problem any more. I've been using 64-bit exclusively for years and can't remember the last time I found a 32-bit only application. And even if I did, it can still run on 64-bit.

  10. #10
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    Re: OS 32bit or 64bit

    Quote Originally Posted by NilPointer View Post
    some software can be incompatible with 64-bit OS.
    What software?

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