Finding Used Memory Address Space; Maximum amount of RAM

Discussion in 'Windows Vista Hardware' started by legendof.jonnie, Apr 14, 2007.

  1. [Win Vista Ultimate 32-bit]

    Is there any way to find out what portion of my memory address space
    is free, or how much has been used up?

    Essentially I want to find my system's maximum amount of addressable
    physical RAM, before I buy more.

    If it makes a difference, Memtest 86+ reports my 2x1GB sticks as
    2048MB. However, task manager says 2045MB and Control Panel>System
    says 2046MB. Computer reckons I have 2.00GB. Does this mean that I
    have in fact already surpassed my maximum by 2-3MB or it's just a
    glitch? (I wondered if it was subtracting 1MB from each stick due to
    the SPD or something.) I know for sure that 768MB will be dedicated to
    my graphics card but I assumed that the rest of my PCI/Onboard devices
    (WiFI card, sound card, NICs) wouldn't need 200MB, leaving me with 3Gb
    of address space for RAM. I would be happy with that.

    So if anyone can confirm a way to find out the amount of address space
    used/remaining I would be much indebted to them.

    Thanks and regards,
    legendof.jonnie, Apr 14, 2007
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  2. legendof.jonnie

    JW Guest

    JW, Apr 14, 2007
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  3. Unfortunately not, I've read up all about PAE, addressing, etc. but I
    have so far been unable to find a way of actually discovering how much
    of the potential 4GB I'm losing. Ideally, I'd like to know whether the
    extra 1GB I'm contemplating adding will actually be used before I buy
    legendof.jonnie, Apr 14, 2007
  4. legendof.jonnie

    AJR Guest

    You checked memory via the Performance Monitor?
    AJR, Apr 15, 2007
  5. Unless there's a way of using it that I'm unaware of, it only tells me
    how many hard faults I'm getting and the amount of physical memory
    used. I know how much physical memory is getting used up already, it's
    the amount of adress space that's being used that I need to find.
    legendof.jonnie, Apr 15, 2007
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