356 percent?

Discussion in 'iMac' started by BasilFawlty, Nov 12, 2011.

  1. BasilFawlty macrumors 6502

    BasilFawlty

    Joined:
    Jun 20, 2009
    Location:
    New Mexico
    #1
    I just installed 8 more GB of memory from OWC (for total of 12) and I went to Activity Monitor to see how must I was using. Well, the memory usage was fine, but I don't understand the %CPU numbers? I happened to be using handbrake at the time and handbrake was showing 356% CPU? How is this possible? Obviously the %CPU isn't based on 100%. Can someone explain this to a relatively new iMac user?
     
  2. Intell, Nov 12, 2011
    Last edited: Nov 12, 2011

    Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    Each thread is 100%. So if its using three threads, its using 300%.
     
  3. iSayuSay macrumors 68030

    iSayuSay

    Joined:
    Feb 6, 2011
    #3
    Yeah .. So an i7 can reach up to 800% on maximum usage due to it has 8threads in total.
     

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