15 & 17" MBPs- Hyperthreading versus real cores?

Discussion in 'MacBook Pro' started by Gata, Sep 9, 2010.

  1. Gata macrumors regular

    Joined:
    Mar 23, 2010
    #1
    Assuming all cores are maxed out, how would the performance of the virtual cores stack up against physical cores (say, in the instance of a i7-620m)?
     
  2. Eddyisgreat macrumors 601

    Joined:
    Oct 24, 2007
    #2
    All other variables held constant, physical cores will always beat out a system with half the physical cores + hyperthreading, particularly if you are running processes that actually max out the cores.
     
  3. amarcus macrumors 6502

    Joined:
    Feb 26, 2008
    Location:
    London, UK
    #3
    Hyper-threading at its best gives about a 15-20% performance increase. It's more about better utilising the cores you have rather than adding additional compute power. In short a hyper-threaded i7-620m is more of souped up dual core and wouldn't be able to touch a true quad-core equivalent.
     

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