2.53GHz i5 MacBook Pro vs. Base Model 21.5' iMac i3

Discussion in 'Buying Tips and Advice' started by rufus247, Jul 27, 2010.

  1. rufus247 macrumors member

    Jan 26, 2009
    Putting price and value aside, which computer is more powerful/faster, the 2.53GHz 15" MacBook Pro i5, or the newly updated entry level iMac with 3.06GHz i3? Thanks for your help.
  2. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
    iMac is. Its CPU runs at 3.06GHz all the time while MBP's runs at 2.53GHz (~21% difference). However, the MBP's CPU supports Turbo and thus the CPU will overclock itself to up to 3.06GHz when only one core is needed. Conclusion: About as fast in single threaded performance but iMac is about 20% faster in multithreaded performance
  3. rufus247 thread starter macrumors member

    Jan 26, 2009
  4. rufus247 thread starter macrumors member

    Jan 26, 2009
    I'm trying to see if it is worth selling my MacBook Pro to get it. I think I would go with the 3.20GHz iMac, not the entry level one. I'm really kicking myself about buying the MacBook Pro. I use it as if it were a desktop, as it rarely leaves my desk. I am leaning heavily towards selling it, but I don't want to lose too much money in the matter. I get the student discount, which makes the computer $1399. Also, Tennessee's tax free weekend is in a couple of weeks, so that will help too. What do you think my chances are of getting $2000 for my MacBook Pro (the details are listed in my signature and with sales tax, it would cost $2350.88 new)?
  5. Mikey7c8 macrumors regular

    Sep 15, 2009
    Montreal, Canada
    the 2.53Ghz i5's also have HT, so the macbook should be faster if the apps you're running are threaded.

    None of the i3's have HT.

    Also, that particular has vt-x and vt-d and will definitely be faster if you're planning on running virtual machines.

  6. anon.ymous macrumors member

    Jul 15, 2010
    False on the hyperthreading. All of the i3s on the new iMacs have hyperthreading. The 3.06 does not have turboboost, however. All the other processor options do.

    The i5 2.8 quad core on the 27-inch doesn't have hyperthreading - the only one of the bunch.
  7. skiltrip, Dec 31, 2010
    Last edited: Dec 31, 2010

    skiltrip macrumors 68030

    May 6, 2010
    New York
  8. pukifloyd macrumors 6502a


    Jun 25, 2008
    That was very helpful...thanks :)

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