diff. between DDR2 and DDR3 RAM (2011 model)

Discussion in 'MacBook' started by mjhann, Jan 13, 2011.

  1. mjhann macrumors newbie

    Jan 4, 2010
    hi, ive just order the new macbook and have been looking at RAM on crucial.com for choosing the right memory to buy.

    i used the "Crucial Memory Advisor™ tool" to find to find "!guaranteed"-compatible memory for my macbook.
    For model, i selected "macbook 2.4GHz intel core 2 duo (13" - white)" which it seems fits the description on the apple website at the moment and it reccommended this below..

    "4GB kit (2GBx2), 200-pin SODIMM, DDR2 PC2-5300 memory module"- http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=AE706D07A5CA7304

    but the apple website says
    "MacBook uses one of the fastest memory technologies available today — 1066MHz Double Data Rate (DDR3),
    "1066MHz DDR3 SDRAM" - http://store.apple.com/uk/configure/MC516B/A?mco=MTc4OTE2OTA

    so my question is is there much difference between DDR2 and DDR3 RAM
    and am i better off trying to find a site that sells DDR3 RAM instead of going with what Crucial reccommended?

    Thanks in advance to anyone who could help me with this..... Cheers! :)
  2. simsaladimbamba

    Nov 28, 2010
    The DDR2 RAM has 200 pins (So-DIMM), the DDR3 RAM has 204 pins (SO-DIMM), therefore a DDR2 RAM stick will not stick to a DDR3 RAM stick slot.

    DDR2 vs. DDR3
  3. alust2013 macrumors 601


    Feb 6, 2010
    On the fence
    DDR2 will not work with your computer. What happened is that you must have selected the older model white MacBook with the 2.4 GHz processor, and that one used DDR2. You will need to get DDR3 for your MacBook, and crucial does sell that, check out this link
  4. brentsg macrumors 68040

    Oct 15, 2008
    Crucial lists the Apple model number when you select the Macbook. Make sure you're selecting the right one.
  5. iThinkergoiMac macrumors 68030

    Jan 20, 2010
    The actual difference (apart from the pin count) is that DDR3 is much faster. Even if DDR2 did fit, you wouldn't want to use it.
  6. mjhann thread starter macrumors newbie

    Jan 4, 2010
    cheers for all the responses people... on the select model bit there's

    macbook 2.4GHz intel core 2 duo (13" - white) MB467LL/A and there's also MB467ZP/A

    please could someone tell me which will be best to purchase for the lastest model the one ending in LL/A or ZP/A

  7. simsaladimbamba

    Nov 28, 2010
    via http://forums.macrumors.com/showthread.php?t=807536
    via http://www.google.co.uk/search?q=MB467ZP/A&ie=utf-8&oe=utf-8

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