Is the iMac Quad Core i7 faster than the 2008 Octo-Core Mac Pro?

Discussion in 'iMac' started by DaSal, Oct 22, 2009.

  1. DaSal macrumors regular

    Joined:
    Mar 19, 2008
    Location:
    The Netherlands
    #1
    So the older Mac Pro's from 2008 have 2 2.8ghz Quad Core Intel Xeon processors, without hyperthreading, for a total of 8 cores, and the top of the line iMac has a Quar Core i7 2,8ghz with hyperthreading for a total of 8 (virtual) cores.

    With the ghz being the same but less "real" cores, but probably newer CPU architecture, which CPU will actually be faster?
     
  2. zedsdead macrumors 68040

    Joined:
    Jun 20, 2007
    #2
    Hyper-threading cannot match the performance of real-cores; however, there is no Turbo Boost in that model either. The 2.8 i7's in the iMac can achieve speeds up to 3.46 when not using all the cores. For any kind of encoding or anything where all 8-Cores are used, the Mac Pro will trump the iMac.
     
  3. netkas macrumors 65816

    Joined:
    Oct 2, 2007
    #3

    Arch is same, imac's i7 has ondie pcie controlelr and one of three memory channels disabled.
     
  4. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #4
    Mac Pro will still destroy iMac. As said above, Hyperthreading isn't same as 8 physical cores plus support for Hyperthreading is still quite poor. Mac Pro is upgradeable too
     

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