please can someone tell me if i'm about to buy the correct ram...

Discussion in 'MacBook' started by jonahtron, Jul 17, 2011.

  1. jonahtron macrumors member

    Jun 2, 2011
    hi, im just about to purchase for my early 2008 white macbook the following...

    2GB, 200-pin SODIMM, 256MX64, DDR2 PC2-5300 (crucial)

    as far as i know this is absolutely fine, and mactracker tells me i need

    200-pin, PC2-5300(667 MHz), DDR2 SODIMM

    the only confusion im having is that the seller doesnt list the Hmz speed and i dont know what 256MX64 refers to...

    i honestly have googled but found it more than a little confusing to be honest.

    any help would be appreciated
  2. gr8tfly macrumors 603


    Oct 29, 2006
    ~119W 34N
    256M x 64 describes the capacity of the SODIMM in megabits. If you convert it to bytes, you would multiply the 256Mb x 8, which comes out to 2GB ((64bits / 8bits per byte) * 256,000,000 bits).

    DDR2 PC-5300 runs at 667MHz.

    It should be the correct device, though usually sellers have a cross-reference to the make/model of your machine. Check Crucial's home site - they should have a reference there. Your User's Guide also has a description of the correct type for your Mac.
  3. jonahtron thread starter macrumors member

    Jun 2, 2011
    If I didnt sat that this was the most useful and perfect response,
    i'd be seriously lacking in form.

    thankyou very much!

    problem solved

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