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Thread: limit ram 32 or 64 bits? Once and for all

  1. #1
    Join Date
    Feb 2013
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    limit ram 32 or 64 bits? Once and for all

    i have ubumtu 12.10 ... my uname -a is Linux ubuDev 3.5.0-23-generic #35-Ubuntu SMP Thu Jan 24 13:05:29 UTC 2013 i686 i686 i686 GNU/Linux

    meaning, 32 bits but i got 8gb ram

    free -m -t

    total usado livre compart. buffers em cache Mem: 8018 4616 3402 0 47 624
    -/+ buffers/cache: 3943 4074
    Swap: 3814 0 3814
    Total: 11833 4616 7217

    SO... am i using fully potential 8gb or this is just wrong ? I read other threads about this subject, but no one answer for sure...

    any lights ? tyadv

  2. #2
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    Re: limit ram 32 or 64 bits? Once and for all

    Looks like a 32 bit operating system using the PAE kernel enabling use of all your ram.

  3. #3
    Join Date
    Feb 2011
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    Kubuntu

    Re: limit ram 32 or 64 bits? Once and for all

    32 bit Linux with PAE should allow up to 64GB RAM to be seen and used.

    64 bit Linux has now gained used in some operations so it might be worth using the 64 bit version of Linux.

  4. #4
    Join Date
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    Ubuntu 14.04 Trusty Tahr

    Re: limit ram 32 or 64 bits? Once and for all

    You will also gain a 10% to 40% increase in speed for specific operations using 64-bit. There is an extra operation (or 2) to translate the Physical Address Extension (PAE) to fit within the 32-bit (4GB) register address space of the i686 (32-bit) kernel.

    And it will always nag you that you can get your system to run just a little bit faster.
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