7 Replies Latest reply: Jun 12, 2011 7:46 AM by promohthree
promohthree Level 1 (0 points)

Here's my info:


  Model Name:          MacBook Pro

  Model Identifier:          MacBookPro4,1

  Processor Name:          Intel Core 2 Duo

  Processor Speed:          2.4 GHz

  Number Of Processors:          1

  Total Number Of Cores:          2

  L2 Cache:          3 MB

  Memory:          2 GB

  Bus Speed:          800 MHz


I want to upgrade my RAM, as the computer is showing a bit of age at 3 years old now.  I looked at this support page:




And judged the installation to be easy enough for me to do, but I'm confused as to how much RAM I can buy.  The conflict I see is that "Additional notes" says I can use up to 8GB of RAM, but the table says only 4GB.  What's throwing me off is basic math -- is that 4GB only referring to my slots (thus 4+4=8) or is it saying that anything over 4GB will not be recognized by my computer?


I spoke with someone at Apple, but he seemed a bit confused by my question, and eventually gave me a "yes" that was timid enough that I felt the need to post here.  So, I'd appreciate the support!  Thanks a lot, everyone.  I'm just looking to not spend more than I need (in terms of buying excess RAM), and make sure I don't ruin my Mac in the process.

MacBook Pro, Mac OS X (10.5.4)
  • ds store Level 7 (30,325 points)

    The MacBook Pro 4,1 can acces a maximum RAM of 6GB


    However RAM comes in 4GB modules and you have two slots, so you install 8GB (two 4GB modules) and can only access 6GB of it according to MacTracker.


    Use the free Crucial.com site to make sure your getting the extact specified RAM specs, you can buy it anywhere if you like.





    (no comp)

  • promohthree Level 1 (0 points)

    Thanks, DS

  • eww Level 9 (52,980 points)

    promohthree: DON'T buy two 4GB RAM modules. Buy one, which will give you 5GB of RAM, and if you find that you still want or need more, buy a 2GB module to replace your remaining 1GB module.


    Your machine may not work at all with two 4GB modules installed, and even if it does, you'll spend twice as much that way to get 6GB as you would to get 5GB.

  • ds store Level 7 (30,325 points)

    eww is right,


    use the Crucial.com checker for your machine, they will give you the correct "kit" specifications for your machine so your not spending too much or putting in too much memory that it won't work.


    It also should tell you your default RAM installed, so if your machine came with one 2GB module, you only then need a 4GB module.


    Again, check with Crucial as they make the process simplified without opening up your machine to take a look.

  • promohthree Level 1 (0 points)

    I have two 1 GB models installed, according to the contents on About This Mac.


    Any suggestions on where to shop?  Crucial, for instance, has 2x2 for $60 and a 4GB solo for $110.  Makes me question how much I need/want that extra gig. 

  • eww Level 9 (52,980 points)
  • promohthree Level 1 (0 points)

    Thanks, eww!


    They also have a 6GB module update that pairs the 4 and 2.  Might go with that -- is there any reason not to?  The sites I've been reading have suggested replacing both cards at the same time if possible when upgrading.