New macbook pro retina 13 inch 2.9 i5 reports 4 cores?

Discussion in 'MacBook Pro' started by guyht, Apr 27, 2015.

  1. guyht macrumors newbie

    Joined:
    Feb 11, 2011
    #1
    Just got my new macbook pro retina 13 inch with 2.9GHz duel core intel i5, but its reporting that I have 4 cores:

    % sysctl -n hw.ncpu
    4

    It also shows 4 cores in activity monitor and the load average is always around 4 - 5

    Is the i5 actually quad core? What is going on here?
    Thx
     
  2. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #2
    The i5 and i7 processors used in the 13" rMBP are dual core with hyper threading.
     
  3. CaptainChunk macrumors 68020

    CaptainChunk

    Joined:
    Apr 16, 2008
    Location:
    Phoenix, AZ
    #3
    No. Mobile i5 CPUs support HyperThreading, so it's also reporting the two "virtual" cores. On a quad-core i7, it would report 8 total "cores".
     
  4. guyht thread starter macrumors newbie

    Joined:
    Feb 11, 2011
  5. Mr. Retrofire macrumors 601

    Mr. Retrofire

    Joined:
    Mar 2, 2010
    Location:
    www.emiliana.cl/en
    #5
    Please use
    Code:
    sudo sysctl -n hw.physicalcpu
     

Share This Page