4GB memory in Blackbook?

Discussion in 'MacBook Pro' started by vegasprerunner, Jun 17, 2007.

  1. vegasprerunner macrumors newbie

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    #1
  2. flopticalcube macrumors G4

    flopticalcube

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    #2
    Correct! When you put a matched pair of 2GB sticks in, it turns on the 128bit access mode which speeds things up considerably, especially for the GMA950 graphics chip. The only downside is that only 3.3GB is actually accessible.
     
  3. Illicit macrumors 6502

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    #3
    You should check out the note on the bottom of the page: :)
    NOTE: A 4.0GB (2GB x 2 Pair) configuration was also tested by 'popular demand'. Although the Core 2 Duo Macs are limited to 3.0GB addressed, the 4GB Set (2GB x 2 Pair) does appear enable 128 Bit addressing. While there does seem to be a small performance benefit gained with the 4.0GB vs. 3.0GB config, we'd recommend sticking with 3.0GBs max (in Core 2 Duos) unless you absolutely are seeking every last trickle of performance boost possible.
     
  4. Igantius macrumors 65816

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    #4
    Interesting that under OWC's results for Halo, 2560MB (i.e. 2GB+512MB) was better than 3GB or 4GB of installed RAM.
     
  5. petvas macrumors 601

    petvas

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    #5
    The Macbook supports up to 2GB of RAM. At least that is mentioned on the Apple Website. The Macbook Pro supports 4GB (Santa Rosa) and the iMac 3GB.
     
  6. flopticalcube macrumors G4

    flopticalcube

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    #6
    It is strange, isn't it? If you look closely at the metrics for the other tests, 4GB actually gives quite a bit of a performance boost. I think OWC is being a little conservative in their wording.
     
  7. flopticalcube macrumors G4

    flopticalcube

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    #7
    Apple has a history of being conservative when it comes to maximum RAM. Real world results are frequently better.
     
  8. localoid macrumors 68020

    localoid

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    #8
    You can use a "benchmark" to "prove" almost anything you'd want by picking a benchmark that will show better results under a given set of conditions. I'm not saying that the OWC results are bogus, but to gain more complete and accurate real-world insight additional testing that makes use of a broader range benchmarking methods is really needed.
     
  9. whateverandever macrumors 6502a

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    #9
    The C2D Blackbooks support up to 3.3GB of memory. Although buying a 2GB module for the second slot only to have an additional 300MB addressed over a 1GB module seems like a waste of money to me.
     
  10. CalBoy macrumors 604

    CalBoy

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    #10
    But I believe that test results showed how the two even sticks of 2gb each did better than 1 gig stick with 1 2 gig stick. Something about the balance was mentioned above.
     
  11. flopticalcube macrumors G4

    flopticalcube

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    #11
    I guess we will see more results like 3dmarks and such when the prices fall further.
     
  12. Igantius macrumors 65816

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    #12
    BTW the recent Barefeats testing of the new MBPs included results for a MB with 4GB.
     

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