RAM: How to upgrade to 16GB

Discussion in 'iMac' started by xghostofme, Apr 13, 2013.

  1. xghostofme macrumors newbie

    Joined:
    Apr 8, 2013
    #1
    Hey guys,

    I've done a lot of research, and I've posted about this before.. but got no answers. I'm gonna keep it short and sweet this time and not go too into detail.

    I have an 27" iMac 10,1 (late 2009) model.

    It supports up to 16GB of DDR3 PC3-8500 1066MHz SO-DIMM memory.

    To ensure full compatibility, I am looking to purchase 16GBs of RAM and will be replacing the original factory installed RAM, as I understand different chips can cause problems.


    MY QUESTION:

    Must I buy 1 package with 4x4GB chips... or can I buy 2 packages with 2x4GB each?

    Will either of these options make a difference in compatibility?
     
  2. Lancer macrumors 68020

    Lancer

    Joined:
    Jul 22, 2002
    Location:
    Australia
    #2
    best place to start is somewhere like crucial.com, you can search for your model so you know you'll get the right RAM, link below for the Late 2009 iMac.

    http://www.crucial.com/store/listparts.aspx?model=iMac (21.5 and 27-inch, Late 2009)

    As far as I know most RAM comes in packs of 2, and right now 2x 8Gb for you iMac is $70, so $140 total plus shipping.

    ETA - sorry that was for a total of 32Gb, I'd check to see if you can do 32Gb in the 2009.

    2x 4Gb is $42, so $84 plus shipping for 16Gb.
     
  3. bobcan macrumors 6502a

    bobcan

    Joined:
    Jan 8, 2007
    Location:
    Sunny but Cold.. Canada
    #3
    That model (iMac 10,1) should be 4x Slots and capable of 16GB as you have stated.. I am quite sure there is No Benefit to either 4x 4GB or 2x 8GB from any I have ever done upgrades on, so purchase as you feel best suits you.. ** as I look on Newegg for any specials I see that there are likely NO 8GB single stick options, and so that answers that!!

    So, about the question, a couple of 2x 4GB packages is just FINE, as that is essentially what went into my friend's iMac a couple of months back as well.. It was Mushkin Ram and seems as good as Crucial for the 6 or 7 computers I have put it into, USA made and a good warranty as well.. Looks like about $60-65 per 2x4GB set as of today ~ Unfortunately RAM prices seem to have increased in the past few months.. Oh well, still a good upgrade for the price!! :apple:
     
  4. xghostofme thread starter macrumors newbie

    Joined:
    Apr 8, 2013
    #4

    thanks man! appreciate the help :)
     
  5. iF34R macrumors 6502a

    iF34R

    Joined:
    Jul 13, 2011
    Location:
    South Carolina
    #5
    How much ram do you have in there now?

    If you're already at 8GB, just get a 2x4GB pair, that matches the specs you need, and you'll be fine.
     

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