Early 2011 15 inch MBP with > 8gb ram?

Discussion in 'MacBook Pro' started by puremadeup, Feb 28, 2011.

  1. puremadeup macrumors newbie

    Joined:
    Sep 10, 2008
    #1
    Hi,

    I have just bought one of the new macbook pros. I know the apple supported amount of memory is 8gb but I was wondering if more could be used (as has been possible with some previous models). I don't have any memory to test.

    Cheers
    Jon
     
  2. Hellhammer Moderator

    Hellhammer

    Staff Member

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    Finland
    #2
    According to Intel, the memory controller supports up to 8GB of RAM.
     
  3. Dwalls90 macrumors 601

    Dwalls90

    Joined:
    Feb 5, 2009
    #3
    Only 8GB ... one time before Apple said the max as 2Gb, but in reality the controller allowed for 3.3Gb (4Gb Physically).

    8Gb is a crazy amount of RAM though for a notebook ...
     
  4. puremadeup thread starter macrumors newbie

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    Sep 10, 2008
    #4
    Fair enough, if intel say it supports 8 I will stick to that. I am doing some stuff that will easily max it out so I was just curious.
     
  5. benpatient macrumors 68000

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    Nov 4, 2003
    #5
    we won't really know for sure until 8 GB 204 pin chips start appearing, but it is possible that 16 gb will work.

    intel does specifiy 8 gb, but there are some non-mac Sandy Bridge laptops that seem to support more than 8 gb (they have more than 2 RAM slots).

    If this turns out to be a hard limit, then that's going to be one of the main problems with this machine in a couple of years. The processor and architecture are pretty fast, and probably somewhat future-proof.

    I'd imagine Adobe CS6 is going to be a dog without 8 GB of RAM, though. Having some buffer above that would really be nice...at least as a future upgrade option.
     
  6. AdamRock macrumors 6502a

    AdamRock

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  7. shstiger2009 macrumors 6502

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    Jan 30, 2011
    #7
    Like what? I'm not doubting you but I'm curious because I'm wondering the same things as you.
     
  8. CaoCao, Feb 28, 2011
    Last edited: Feb 28, 2011

    CaoCao macrumors 6502a

    Joined:
    Jul 27, 2010
    #8
    You can buy 8GB SO-DIMMs, but they are ~$800 each. The only reason these exist is for insane mobile workstations that pack desktop processors in them. The prices for these sticks should start dropping with Intel support of 16GB for Mobiles since then they will actually have demand. Apple just recently started selling 8GB RAM sticks for the Mac Pro (there are 16GB RAM sticks :eek:).

    I would also like to point out that the 2011 iMac will support 32GB of RAM so OWC will probably start selling 8GB SO-DIMMs them

    EDIT: DAMN!!!! The HP Elitebooks appear to be able to use 16GB for dual Core i5-i7s and 32GB for quad Core i7s
     
  9. benpatient macrumors 68000

    Joined:
    Nov 4, 2003
    #9
    Just an FYI, I found this laptop:

    http://www.frostycomputers.com/GT680R_008US_9S7_16F211_008_p/gt680r-008us 9s7-16f211-008.htm

    which can be outfitted with 8, 12, or 16 GB of RAM.

    It uses the exact same 2.0 ghz i7 Sandy Bridge processor as the base-model 15 inch macbook pro.

    http://ark.intel.com/Product.aspx?id=52219&processor=i7-2630QM&spec-codes=SR02Y

    The intel page for that chip indicates is only supports 8 GB of RAM, and 2 memory channels. The MSI laptop has 4 RAM slots, whereas the MBP only has 2, but there is hardware spec for 2, 3 or 4 RAM slots in Sandy Bridge mobile, so it doesn't make any sense that Intel says only 8GB is possible on this specific chip when MSI is offering 12 and 16 options, unless Intel is just misrepresenting the capabilities on their chipset page. Wouldn't be the first time.

    Or I guess MSI could be using some unofficial board that allows more channels, or more RAM per channel, or something like that.

    Can anyone clarify this?
     
  10. Hellhammer Moderator

    Hellhammer

    Staff Member

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    Finland
    #10
    There are 32GB modules too ;)

    There were some Nehalem laptops with +8GB as well. I asked Intel about this and they still said 8GB is the maximum and the rest of the RAM would not be utilized (might recognize all 16GB but only 8GB would be utilized). I actually made a thread about this back then. I have not seen any concrete proofs (pictures, screenshots) that any mobile CPU could fully utilize +8GB of RAM, yet.
     
  11. CaoCao macrumors 6502a

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    Jul 27, 2010
    #11
    OMG 256GB RAM in a Mac Pro, I COULD FINALLY USE FIREFOX WITH ADD-ONS!
     
  12. billgates99, Feb 28, 2011
    Last edited: Feb 28, 2011

    billgates99 macrumors regular

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    Apr 13, 2010
    #12
    There are only 2 DIMMs in the MBP, so theoretical 16GB is possible but I haven't seen any 8GB PC3-8500 SO-DIMM sticks for laptops on the market yet.

    until that time, 8GB is the maximum.

    I have 16GB in my windows laptop, but that is only possible because it has 4 DIMM slots.

    All of the arrandale quad-core (i7-720QM, 820QM, 920QM) mobile cpus can handle 4 DIMMs in a PM55 chipset. all 16GB of the RAM is accessible. I've seen the 8GB comment on the intel i7-2820QM page, but it says the same for the arrandale i7-820QM and I know that 16GB is not a problem for this CPU. I thought the 8GB perhaps referred to the max memory in each DIMM.
     

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