RAM compatibility, early 2008 non unibody Macbook Pro 15" (MacbookPro 4,1)

Discussion in 'MacBook Pro' started by EpicBlack, Jun 22, 2014.

  1. EpicBlack, Jun 22, 2014
    Last edited: Jun 23, 2014

    EpicBlack macrumors newbie

    Joined:
    Jun 22, 2014
    #1
    Hi,

    I'm upgrading the RAM on my early 2008, non-unibody Macbook Pro 15" (Macbook Pro 4,1)

    According to specs this supports upto 4 gigs offically and 6 gigs max.
    RAM specs are PC-5300 667 DDR2 SODIMM RAM

    I am considering buying the following RAM from Crucial.

    Manufacturer Crucial
    Manufacturer Part # CT51272AB667S
    Memory Type DDR2 SDRAM
    Capacity 4GB
    Pins 240 Pin
    Bus Type PC-5300
    Error Correction Registered ECC
    Cycle Time 6ns
    Cas CL5
    Data Transfer Rate 667Mhz
    Memory Clock 166Mhz
    Rank Rank 1
    Voltage 1.8

    The crucial website has a tool that states that this RAM would be incompatible with my Mac. I dont understand why so I thought I'd check here.

    Could anyone help me out since I plan to buy this soon.
    If it isnt, would be great if you could suggest some options/

    Thanks,
    Epic
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    That is because you have selected 240 pin RAM, which is RAM for desktop computers.
    You need 200-pin DDR2 SO-DIMM RAM, which is RAM for older notebook computers and the older iMacs and the older Mac minis.

     
  3. EpicBlack thread starter macrumors newbie

    Joined:
    Jun 22, 2014
    #3
    Thanks... yeah I just figured that... Thing is, Im having a tough time finding DDR2 at reasonable prices... found this for a steal.

    Ah well, Thank you. And great post you shared!
     
  4. EpicBlack thread starter macrumors newbie

    Joined:
    Jun 22, 2014
  5. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #5
    They will work, here is a 4 GB module on eBay via this search.

    Maybe also invest in an SSD, 256 GB ones can be had for less than 150 USD nowadays, and SSD will speed up your Mac immensely.
     
  6. EpicBlack thread starter macrumors newbie

    Joined:
    Jun 22, 2014
    #6
    But these are rated at 800 MHz whereas my MBP takes 667 MHz.

    Is it backward compatible because its 200 pin? will I be able to mix 800MHz in one slot with 667 in the other?

    Thanks in advance.

    And yes, I'm going for a boot HDD replacement too. Want to juice this baby for another year at least..
     
  7. EpicBlack thread starter macrumors newbie

    Joined:
    Jun 22, 2014
    #7
    hey guys. can you help me out with whether 800 Mhz ram would be cackward compatible with my 667 rated macbook pro ram slot. I want to buy it today.

    thanks in advance.
     

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