Late '08 uMBP - 6GB Upgrade - Which Slot?

Discussion in 'MacBook Pro' started by neteng101, Apr 1, 2010.

  1. neteng101 macrumors 65816

    Jan 7, 2009
    So we have upper and lower slots, which slot should the 4GB module go into?

    Which slot is DIMM0 and which is DIMM1? :confused:
  2. thefunkymunky macrumors 65816

    Feb 24, 2005
    It doesn't matter. You can put the 4GB module in either slot.:D
  3. DHart macrumors 6502


    Jan 17, 2008
    Can you mix RAM from different sources?

    Like if I buy a 4GB chip from OWC and want to replace one of the two 2GB chips in a MBP which has two Apple supplied 2GB chips, can I mix the two different brands of RAM? Assuming good quality chips, are they likely to work well together?
  4. bobbytomorow macrumors 6502


    Nov 10, 2007
    Left Coast
    As long as its 1066MHz it shouldn't matter mate, just make sure the stick is Mac friendly they can be picky
  5. neteng101 thread starter macrumors 65816

    Jan 7, 2009
    Thanks - I finally found reference that it can go into either slot too. Mixing different sizes will cause the loss of dual channel so its very marginally slower but you get the extra RAM which is useful for me (running VMs).

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