Upgrading RAM on 20" iMac

Discussion in 'Buying Tips and Advice' started by AzRocks, Oct 11, 2007.

  1. AzRocks macrumors newbie

    Oct 11, 2007
    I'm going to buy an iMac20" Core 2 Duo 2.0 Ghz. when Leopard comes out. I want to (if possible) upgrade the RAm from 1 GB to 2 GB. Is there any easy way to do this, without spending tons of money to get it directly from Apple. If i buy 1 GB RAM could i add that to the computer to make it 2 GB? I'm really a n00b on this type of stuff so please make instructions a simple as possible. THanks so much!
  2. jnash macrumors regular

    Apr 26, 2007
    Installing ram on the imac's are pretty easy you can google how to do so, and as far as getting ram I recommend maybe going to www.newegg.com and finding whatever is on sale I am going to upgrade to 4 gig cause from 2 to 4 gigs its only like 50-80 dollar difference.
  3. Sun Baked macrumors G5

    Sun Baked

    May 19, 2002
    Instuctions ....

    iMac (Mid 2007): Installing or replacing memory

    Cost likely between $35-40 for a PC2-5300 1GB SO-DIMM.

    Remember that it uses notebook memory, not desktop.

    As far as double checking which side the keyway is on, just look inside -- the view isn't obstructed.
  4. AzRocks thread starter macrumors newbie

    Oct 11, 2007
    my question baisically is if i buy a 1 GB could i add it to the 1 Gb it comes with to make it 2 GB or do have to buy a 2 GB.
  5. Nobody Famous macrumors newbie

    Aug 1, 2007
    If you buy your iMac with 1 GB of RAM directly from Apple they will put in two 512 MB sticks of RAM to equal 1 GB. If you want to upgrade to 2 GB of RAM, you'll have to buy two 1 GB sticks.
    To get a 1.5 GB configuration, you could buy just one stick of 1 GB RAM and place it in a slot formerly occupied by a 512 MB RAM stick, but with different size sticks inserted, you'll lose what they call "dual channeling" processing.
    Essentially, without dual channeling, you'll take a 5 - 8% hit in video processing (or at least that's what I've read on these forums).

    FWIW, I've decided to buy two sticks of 1 GB RAM to upgrade my 20" iMac to 2 GB. I always watch the RAM prices at dealRAM.com
  6. maestrokev macrumors 6502a


    Apr 23, 2007
    They put in 2 x 512MB??? You sure about that? Check www.apple.com and their store states the 1GB is sold as 1 piece - been like that since the new iMacs were launched so not sure where you're getting your info from. I ordered my iMac with 1GB and it came as 1 stick. I bought additional RAM from a 3rd party vendor and it works fine.
  7. AzRocks thread starter macrumors newbie

    Oct 11, 2007
    so... can anyone confirm if the new iMacs come with 2x512 MB or 1x1 GB?
  8. expergo macrumors regular

    Nov 21, 2004
    1x1GB. Says so when you checkout and that's how mine came with.
  9. AzRocks thread starter macrumors newbie

    Oct 11, 2007
    thanks! a couple more questions:

    1. if i want to upgrade it to 2 GB RAM, what is the best way to do this. Should I just buy a 1 GB RAM from someplace like macsales.com or do i have to buy 2 GB of RAM.

    2. which is better ram: OWC, Micron, Samsung or Techworks (im looking on macsales.com)

    3. i read somewhere that you have to have only apple RAM installed to get support at a genius bar. is this true?

    Thanks everyone for your help!
  10. ClassicBean macrumors 6502a

    Jun 20, 2004
    It definitely comes with 1 x 1GB. Can't remember who said 2 x 512MB but they are dead wrong when referring to the new aluminum iMacs.

    Installing the RAM is literally as easy as putting the unit face down on a cloth and unscrewing once screw. You then pop the extra ram into the empty slot.

    To answer your questions:

    1. Buy 3rd party RAM unless you're a fan of paying three times as much
    2. Not sure
    3. If your unit is defective and they can blame 3rd party ram on causing the issue, they might. However, I don't think it's likely. If you have an issue, just be sure to remove the 3rd party RAM before sending it in.
  11. AzRocks thread starter macrumors newbie

    Oct 11, 2007
    Right, but if i want 2GB- all i need to buy is 1 GB right?
  12. mondesi43 macrumors regular

    Aug 27, 2007

    You're right. But you might want to buy a 2G stick just in case you want to go to 4G later on.....
  13. AzRocks thread starter macrumors newbie

    Oct 11, 2007
    If i buy a 2GB stick and add it to the computer to make 3 GB- wont i run into the problem that were discussed above?

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