RAM Upgrade?

Discussion in 'OS X Mountain Lion (10.8)' started by brn2ski00, Jul 26, 2012.

  1. brn2ski00 macrumors 68020


    Aug 16, 2007
    I have a late 2009 21.5 iMac 3.06 with 4GB RAM.

    After upgrading to ML, I have seen a nice improvement in the overall speed of my machine.

    That said, do you think I stand to gain any more speed by upgrading the RAM? I have 4 total slots and only 2 are in use (2x2GB). Is it worth spending the $50 and filling the two empty slots with 2x4GB for a total of 12GB RAM.

    Will I even notice a difference browsing Safari, using iTunes and iPhoto (the biggest pig)?

    Thanks all in advance! :)
  2. GGJstudios macrumors Westmere


    May 16, 2008
    To determine if you can benefit from more RAM, launch Activity Monitor and click the System Memory tab at the bottom to check your page outs. Page outs are cumulative since your last restart, so the best way to check is to restart your computer and track page outs under your normal workload (the apps, browser pages and documents you normally would have open). If your page outs are significant (say 1GB or more) under normal use, you may benefit from more RAM. If your page outs are zero or very low during normal use, you probably won't see any performance improvement from adding RAM.

    Mac OS X: Reading system memory usage in Activity Monitor

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