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Author Topic: Difference between 64bit & 32bit?  (Read 2663 times)

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giuliano26

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    Difference between 64bit & 32bit?
    « on: June 11, 2011, 04:09:28 AM »
    What is the difference between a 32bit program and 64bit program? Which of them should I use? *sorry for my english.

    Salmon Trout

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    Re: Difference between 64bit & 32bit?
    « Reply #1 on: June 11, 2011, 05:38:51 AM »
    Based on the admittedly small sample so far provided, your English seems excellent. I think the answer you are seeking is probably something like this: 64 bit Windows programs are written to use the features of 64 bit processors, whereas 32 bit programs will only run on 32 bit processors.

    I don't think there is any point in making this reply a complete description of 32 and 64 bit CPUs and programming for them, so I provide some of links below.

    http://en.wikipedia.org/wiki/64-bit#32-bit_vs_64-bit

    http://windows.microsoft.com/en-US/windows-vista/32-bit-and-64-bit-Windows-frequently-asked-questions

    http://www.wisegeek.com/what-is-the-difference-between-a-32-bit-and-64-bit-operating-system.htm




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    Re: Difference between 64bit & 32bit?
    « Reply #2 on: June 11, 2011, 08:47:23 AM »
    Quote
    whereas 32 bit programs will only run on 32 bit processors.
    You meant to say 64 bit programs only run on 64 bit CPU with a 64 bit operating system.



    Salmon Trout

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    Re: Difference between 64bit & 32bit?
    « Reply #3 on: June 11, 2011, 09:03:03 AM »
    You meant to say 64 bit programs only run on 64 bit CPU with a 64 bit operating system.

    That'll teach me to be a wise guy! And to read my posts more carefully before clicking "Post".

    A 32 bit program will run in:

    a 32 bit operating system (which will run on a 32 or a 64 bit processor)
    a 64 bit operating system (which will only run on a 64 bit processor)

    A 64 bit program will only run in:

    a 64 bit operating system (which will only run on a 64 bit processor)

    I think I've got that right?
    « Last Edit: June 11, 2011, 09:17:52 AM by Salmon Trout »

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    Re: Difference between 64bit & 32bit?
    « Reply #4 on: June 11, 2011, 09:42:02 AM »
    Glad you got it right. Must bookmark this!   ;D