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Memory upgrade late 2008 Aluminum MacBook

331 Views 9 Replies Latest reply: Oct 25, 2012 12:14 PM by dmao RSS
dmao Calculating status...
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Oct 10, 2012 12:25 PM

I recently upgraded to Mountain Lion due to forced migration from to iCloud. I have the 2.4 GHz, Intel Core 2 Duo model with 4 gb ram and never had problem with speed, etc.  However machine is now sluggish since upgrade, takes longer for apps to come up, and if apple mail and chrome working, hard to get multi-task with other applications.


Would up-grade to 8 ram help, and can I get from someone like RamJet?

  • BGreg Level 6 Level 6 (17,500 points)
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    Oct 11, 2012 4:27 AM (in response to dmao)

    One check to see if more memory would help for what you run is to look at the Activity Monitor (on your hard drive in applications/utilities or on Launchpad under utilities) and look at the system memory tab, specifically at page ins and page outs. If page outs are greater than page ins by 10% to 15% then more memory would help performance for what you run. A page out occurs when there's not enough memory available, so OS X writes some of the memory to the hard drive to make room for something else. Too much of that can impact performance. Note the values reset when you reboot.


    If you decide you need more memory, OWC and Crucial are two recommended sources for quality memory.

  • BGreg Level 6 Level 6 (17,500 points)
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    Oct 11, 2012 6:51 AM (in response to dmao)

    Another consideration is free disk space. If you have less than 9GB, or generally 10% or less of disk capacity, that can really slow things down.


    Ensure that any program listed at the bottom of the System Preferences window and in your login startup items are all current to run under 10.8. I've seen operating system upgrades before with older code that didn't behave well with the new system.


    Boot with command and r keys held down to boot into recovery mode, and repair the hard drive and permissions.


    Reset the SMC.


    If those steps don't make things better, let me know.

  • BGreg Level 6 Level 6 (17,500 points)
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    Oct 11, 2012 9:32 AM (in response to dmao)

    Crucial is quoting what Apple specs say. However, if you look at OWC, you'll see they confirm that your model can go to 8GB.

  • BGreg Level 6 Level 6 (17,500 points)
    Currently Being Moderated
    Oct 17, 2012 3:02 PM (in response to dmao)

    For those larger sizes, I recommend, and also use, Western Digital Scorpio Black drives. You can check reviews on and amazon. They have a 5 year warranty, which is getting rare these days as vendors shrink their warranties. 


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