% CPU in activity monitor showing up to 700% for an app

Discussion in 'MacBook Pro' started by zukernik, Oct 27, 2012.

  1. zukernik, Oct 27, 2012
    Last edited: Oct 27, 2012

    zukernik macrumors regular

    Apr 14, 2010
    Hong Kong
    I googled and if I understood correctly, 100% = one core. Since the rMBP is quad core, doesn't that mean that the maximum should be 400%? Would it be dangerous for my laptop to let that app run 24h a day? I have the basic Retina Display model with 8GB of RAM. The app also uses 56 threads (not sure what that means).
  2. Gav2k macrumors G3


    Jul 24, 2009
    It has virtual cores too
  3. tmanto02 macrumors 65816


    Jun 5, 2011
    Because the i7 supports hyperthreading it has 8 virtual cores therefore running at 800% would not be to good however I wouldnt stress to much with what you are seeing. When I used handbrake for ripping dvd's my MBP was running at similar figures and getting really hot and loud. My research at the time revealed you need not worry
  4. shznit macrumors member

    Apr 4, 2010

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