Activity Monitor says imovie using over 100% CPU?

Discussion in 'iMac' started by Drewski, Apr 22, 2013.

  1. Drewski macrumors regular

    Joined:
    Jan 6, 2011
    Location:
    Somewhere else
    #1
    As my 2011 2.7 GHz i5 iMac with 12 GB RAM is optimizing and importing video, I checked the activity monitor and saw up to 130% in the %CPU column. What? I don't understand. FWIW, the CPU is only running at ~ 120°F so it's hardly breaking a sweat. Any ideas?

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  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    Aluminum iMacs have very good cooling, that's why their fans rarely rev up. The CPU is at that because it is using 100% of a single core's worth of power and an additional 30% of another core's power.
     

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