10.6.5 Weirdness - Missing RAM!

Discussion in 'Mac Pro' started by Michael73, Nov 10, 2010.

  1. Michael73 macrumors 65816

    Feb 27, 2007
    Seriously! This is the most bizarre thing...

    I downloaded 10.6.5 this evening for my MP - the download and install went flawlessly. After it was all done and the machine restarted, I clicked on "About this Mac" and that's when I noticed it said "Memory: 11 GB" I was like HUH!!! :eek:

    The machine shipped with 4 x 1GB DIMMS and then I bought 4 x 2GB DIMMS from OWC. When I clicked on "More Info..." and it brought up the System Profiler it says I have still have my 4 x 2GB DIMMS, but now it says I have 2 x 1GB DIMMS and 2 x 512MB DIMMS.

    What the heck is going on?
  2. darkpaw macrumors 6502


    Sep 13, 2007
    London, England
  3. loungecorps macrumors member

    Aug 25, 2010
    Very strange, my ram all showed up the same as before. I bought kingston value ram from newegg. Hope you get that figured out
  4. diazj3, Nov 12, 2010
    Last edited: Nov 12, 2010

    diazj3 macrumors 6502a

    Jan 19, 2008
    Also having some weird RAM behavior...

    In my 2009 Quad MP case, while the amount of RAM is correctly reported (7GB), I noticed 10.6.5 manages it differently - or so it seems. According to activity monitor, I see a bit more free memory (green) in general apps; used memory (yellow) seems to clear out much faster after apps are closed - both good things... but the wired memory (red) seems also to be much larger while performing particular RAM intensive apps.

    I don't know if I should consider this a more efficient RAM management under 10.6.5, or a glitch. Can anyone comment on this?


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