16gb RAM in late 2011 MBP (15" 2.5 quad)

Discussion in 'MacBook Pro' started by Beliblis, Jun 19, 2012.

  1. Beliblis macrumors regular

    Dec 31, 2011

    From what I know, the late 2011 models should be able to take 2x 8gb RAM. So I just got mine from Crucial today & put it in.
    Now the system (10.7) tells me I've got one bank of 8gb. And the other slot appears to be empty.

    Is this normal? I mean - is it just that the SYstem Profiler displays the wrong numbers, but I can actually use 16gb?
  2. simsaladimbamba

    Nov 28, 2010
    The 2011 MBPs (early and late models) can support up to 32 GB RAM, but as only 8 GB 204-pin DDR3 SO-DIMM RAM modules exist, 16 GB is the current limit.
    Have you made sure to insert the RAM properly, maybe one stick is a bit loose?
  3. MisterSensitive macrumors regular

    Mar 22, 2012
    Yeah, just did that very upgrade last night on my late 2011 15" 2.2GHz unit.

    The system info says 16G of RAM. I'd try again and reseat the memory as previous poster said.
  4. eron macrumors 6502

    Dec 2, 2008
    I see it as 16GB on my early 2011. Basically top left Apple logo, about Mac. It says 16GB

    Reinstall it. It might not have been slotted in properly.

    If it doesn't work, try installing the ram 1 by 1, till you find the faulty one, then return for a new one.
  5. Mac-Tech macrumors regular


    Jun 4, 2012
    Toronto, ON

    Wow I did not know the Late 2011 Model Mac Book Pro's can support up to 32GB of ram. This is good info for the future! I still can not believe the Retina ones can only go up to 16GB...
  6. bogatyr macrumors 65816

    Mar 13, 2012
    They technically could do 32GB but my guess is that due to space constraints, Apple only has room for 16GB on the MBPR.

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