RAM upgrade Macbook Pro early 2008

Discussion in 'MacBook Pro' started by psychedelia, Mar 1, 2013.

  1. psychedelia macrumors regular

    Joined:
    Jan 28, 2009
    #1
    Hi!
    So i bought a pair of Hypertec 40Y7735-HY (2 GB,DDR2 SDRAM,667 MHz, SO DIMM 200-pin) to upgrade my old Macbook Pro early 2008 (Penryn I belieive).

    So after installing the two new sticks, the computer won't boot. However, when pulling one of the new sticks out replacing it with the old one the computer starts and reads 3 GB of memory. Trying the same setup with the other new stick together with the old stick, same result.

    I've googled and searched around, and I see similar stories with 800 Mhz incompatible memory, but surely the memory i bought is 667 Mhz, and the work independently.

    Does anyone have any good advice on this matter (besides of course, don't be a cheap ass and buy more expensive memory ;D)?
     
  2. robvas macrumors 68020

    Joined:
    Mar 29, 2009
    Location:
    USA
    #2
    Perhaps you are missing a firmware update? You should be able to put 4GB+2GB in there for a total of 6GB.
     
  3. psychedelia thread starter macrumors regular

    Joined:
    Jan 28, 2009
    #3
    It's got the latest firmware updates (running 10.7.52 or whatever the last to digits are). And I'm even only trying to run 4 GB, so I really don't get it.
     

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