someone help me understand how memory works?

Discussion in 'MacBook Pro' started by Antidoll, Oct 21, 2011.

  1. Antidoll macrumors regular

    Joined:
    Aug 19, 2008
    #1
    so my Macbook is supposed to have a 4 GB of memory... I have this application that shows you how much memory is free and it alway shows I have around 1.43 GB free the max I could get if I close everything is around 2 GB...

    what is using the other 2 GB constantly???
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    The operating system is probably using it. The browser is probably using it. Other applications are probably using it.

    ______________________________________________________
    Have a look at Activity Monitor (Applications / Utilities /) and sort by "Real Memory" to see, what applications are using your RAM.

    image below uses sorting by CPU as an example
    [​IMG]
    Further reading:
    ______________________________________________________​

    Also know, that RAM is there to be used, the more there is free, that is not really that attainable.
    I have 8GB RAM and i use it often to its fullest. I don't keep it half empty, as RAM is the fast access to content I work with.

    http://www.ddrmemoryupgrades.com/what_is_ram.html
     
  3. Antidoll thread starter macrumors regular

    Joined:
    Aug 19, 2008
    #3
    but even if I have NOTHING else running ( no browser/ no applications) I still don't get more than 2 GB of memory...

    is it normal that the system would use the whole 2 GB?
     
  4. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #4
    What application do you use to measure the amount of free RAM?
    Have you looked at Activity Monitor yet (don't forget to select SHOW ALL PROCESSES) and also at least read the link titled "Mac OS X: Reading system memory usage in Activity Monitor"?

    My RAM usage after a RESTART:
    [​IMG]
     
  5. Antidoll thread starter macrumors regular

    Joined:
    Aug 19, 2008
  6. LeandrodaFL macrumors 6502a

    LeandrodaFL

    Joined:
    Apr 6, 2011
  7. shardey macrumors 6502a

    shardey

    Joined:
    Jan 28, 2010
    #7
    If you are going to worry about it that much, consider buying 8gb, since it is very affordable right now.
     
  8. Wattser93 macrumors regular

    Joined:
    Sep 6, 2010
    #8
    About $40 on Newegg with free shipping.
     

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