Max ram on iMac i7

Discussion in 'iMac' started by lannim, Apr 7, 2011.

  1. lannim macrumors member

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    #1
    Hi, new to the forums and couldn't find a thread on this. I'm about to order an iMac i7 and plan to upgrade the ram myself, of course (sorry Apple this sucker ain't paying $200+ for 2 gigs). Anyway, the Apple site says up to 16g but I've heard the OS supports up to 32. Anyone have a +16 gig setup in theirs?
     
  2. Eidorian macrumors Penryn

    Eidorian

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    #2
    The P55 chipset is limited to addressing 16 GB of RAM.
     
  3. alust2013 macrumors 601

    alust2013

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    #4
    You can put in up to 32... but given that it uses laptop size RAM, that will run you about $3200
     
  4. lannim thread starter macrumors member

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    #6
    Thanks a lot ;-)
     
  5. alust2013 macrumors 601

    alust2013

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    #7
    Well, this only applies to the dual core models. The quad can handle up to 32GB.
     
  6. Eidorian macrumors Penryn

    Eidorian

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    #8
    I am quite surprised I rattled off that answer when the memory controller is on the CPU.

    To the best of my knowledge, Sandy Bridge processors finally allow the usage of 8 GB density DIMMs in a 2 x 2 configuration for a maximum of 32 GB of RAM.

    On the older LGA 1156 socket you are limited to 16 GB. Even Gigabyte's fancy pants six-slot P55 motherboard had you limited to 16 GB. You just have more slots to allow lower density DIMMs to reach 16 GB.
     
  7. lannim thread starter macrumors member

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    #9
    Sweet..hopefully I can talk myself into just using 16 and being happy but the stubborn idiot inside says go for 32
     
  8. zombierunner macrumors 6502a

    zombierunner

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    #10
    dont you want to wait till the new sandy bridge imacs come out ?
     
  9. lannim thread starter macrumors member

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    #11
    I'd like to, but long story short its sort of a now or never thing :-/
     
  10. Eidorian macrumors Penryn

    Eidorian

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    #12
  11. AppleBMW&Lakers macrumors member

    AppleBMW&Lakers

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    Apr 7, 2011
    #13
    Signed up today to MR

    Hey guys, I have been reading MR forums for 4 years now and was never a member, I am not here to step on anyone's toes or make anybody mad or upset, I just need serious help with Mac things, since there are a lot people who have greater knowledge than I do on all things Apple. I have a Mid iMac 27" Core i3 with 4 GB of RAM, IYO what is the highest I can upgrade to, and where can I get the best deal for the RAM. I have not idea with the DDR3 specifications thanks a lot, I appreciate your help and time.
     
  12. Badger^2 macrumors 68000

    Badger^2

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    #14
    All your answers are here: http://eshop.macsales.com/shop/apple/memory/
     
  13. AppleBMW&Lakers macrumors member

    AppleBMW&Lakers

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    Apr 7, 2011
    #15
    Thank you sir, I appreciate the link it helps a lot. IYO which one should I get:

    4.0GB PC10600 1333MHZ SO Kit (2GB + 2GB) w/Lifetime Warranty


    4.0GB PC10600 1333MHZ SO-DIMM 204 Pin w/Lifetime Warranty
     
  14. lannim thread starter macrumors member

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    #16

    I would get the 2 stick kit to fill up your remaining memory slots
     
  15. AppleBMW&Lakers macrumors member

    AppleBMW&Lakers

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    #17
    4.0GB PC10600 1333MHZ SO Kit (2GB + 2GB) w/Lifetime Warranty..this one?
     
  16. Badger^2 macrumors 68000

    Badger^2

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  17. OatmealRocks macrumors 6502a

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    #19
    OP 16 is max. as stated by others here. What apps do you use? I would say get 8Gb unless you feel you may need 16GB. If you have extra funds I invest in a SSD for even better performance.
     
  18. Badger^2 macrumors 68000

    Badger^2

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    #20
    Thats incorrect.

    As discussed farther up, it will take 32 gigs.
     
  19. lannim thread starter macrumors member

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    #21
    Eh I just picked up 8 to add with the stock since I heard they should mix with no probs..for some reason in pc's ive never mixed sizes of ram but that's just a mental thing :D
    Im sure 12 will do me fine
     
  20. AppleBMW&Lakers macrumors member

    AppleBMW&Lakers

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    #22
    WOW!!! thanks for all the help, I really appreciate it. I use my iMac for graduate school work, recording music using Logic (I have been playing the piano for 19 years), watching movies, just an all around beast of a machine. So my final question, should I add two 2GB sticks to each slot equaling 4GB + 2GB + 2GB or just fill each slot with a 4GB stick so it will be 4GBs in three slots. Thanks once again
     
  21. Badger^2 macrumors 68000

    Badger^2

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    #23
    You have 4 slots.

    2 are filled with two 2 gig sticks = 4 gigs

    you should fill the other two slots with 4 gig sticks = 8 gigs

    4 gigs original + 8 gigs new = 12 gigs with all slots filled.
     
  22. AppleBMW&Lakers macrumors member

    AppleBMW&Lakers

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    Apr 7, 2011
    #24
    Thank you sir for the detailed response I am still new at understanding everything, thanks bro
     
  23. AppleBMW&Lakers macrumors member

    AppleBMW&Lakers

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    Apr 7, 2011
    #25
    what's the difference

    4.0GB PC10600 1333MHZ SO Kit (2GB + 2GB)

    Versus

    4.0GB PC10600 1333MHZ SO-DIMM 204 Pin

    Thanks again
     

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