Notebook not showing correct memory

Discussion in 'Computers' started by Ronald Epstein, Jan 30, 2005.

  1. Ronald Epstein

    Ronald Epstein Founder
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    My brother came up to visit this week
    and brought home a new Sony Vaio notebook
    he had just bought for his job.

    Being curious, I wanted to know what
    features he got for the money he paid.

    Went into Control Panel -> System and
    looked at the GENERAL tab which gives
    a quick look at the specs.

    The memory was listed as 486 (or something
    close to that number).

    "That's odd," I thought. "Either this
    computer is going to have 256 or 512 memory
    installed."

    Looked up the Sony Model # and the specs
    say that the computer should have 512 memory.

    Why is it listing only 486? If memory serves
    me correct doesn't the GENERAL tab tell you
    the amount installed?

    Thanks for the help.
     
  2. Marko Berg

    Marko Berg Supporting Actor

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    Perhaps that model has a video card that is integrated into the motherboard. Such systems usually reserve part of the RAM for the video card.

    Some systems allow you to change the amount of RAM that is reserved for the video card. If the Sony allows this, see if the amount of RAM available to Windows will increase or decrease after fiddling with the video memory settings.
     
  3. DaveNel

    DaveNel Second Unit

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    Thats exactly correct, memory in laptops do have wierd numbers just for that reason..
     
  4. Joseph DeMartino

    Joseph DeMartino Lead Actor

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    Yup, sounds like that model uses "shared" video memory, allocating system RAM to the on-board video card which has no dedicated RAM of its own, or which supplements a limited amount of video RAM as needed. 26 MB sounds like reasonable amount to reserve for that.

    Regards,

    Joe
     
  5. Peter Kim

    Peter Kim Screenwriter

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    Checked the same on mine and it appears that it varies for different setups/manufacturers.

    My Toshiba Satellite, which I thought to have 512 MB of RAM, lists 480 MB of RAM.

    I do know that my notebook doesn't have dedicated video memory.
     
  6. Tekara

    Tekara Supporting Actor

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    heh, usually don't see this as much with RAM, but it's a result of misleading advertising.

    What's hapenning is that the ram was sold under the decimal system, but your computer uses the binary system. So 512 in decimal comes out to roughly just over 488.
     
  7. Joseph DeMartino

    Joseph DeMartino Lead Actor

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  8. Tekara

    Tekara Supporting Actor

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    512 * 1000 * 1000 = 512,000,000

    512,000,000 / 1024 / 1024 = 488.24MB

    My math looks fine to me.
     
  9. DaveNel

    DaveNel Second Unit

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    Looks good to me, That looks like a A+ example of the decimal
     
  10. Kimmo Jaskari

    Kimmo Jaskari Screenwriter

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    The math may be right, but the assumption that the system application in the Control Panel showing actual RAM is not.

    On my laptop, with 512MB memory and 32MB of dedicated video card memory, the system application says "512 MB RAM" as clear as day.

    The Vaio almost certainly has some lame duck graphics card that steals system memory.
     

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