May be dumb but...

Discussion in 'MacBook Pro' started by Sdahe, Jan 12, 2009.

  1. Sdahe macrumors 68000

    Sdahe

    Joined:
    Oct 26, 2007
    Location:
    San Juan, PR
    #1
    I would like to know... Why is it that the MBP works better and faster when is connected to the AC?... With battery power runs slower!!!
     
  2. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #2
    Because the system scales the processor down to save battery life.

    You can change this in the power settings.
     
  3. Eddyisgreat macrumors 601

    Joined:
    Oct 24, 2007
    #3
    Because when you are on battery life more than likely your machine is throwing on the optimization for "Better Energy Savings" which throws down the CPU's multiplier (runs slower) and shortens the spin time of the hard disk.

    While plugged in everything is going full speed.
     
  4. Sdahe thread starter macrumors 68000

    Sdahe

    Joined:
    Oct 26, 2007
    Location:
    San Juan, PR
    #4
    So how much time will I cut off from battery power if I modify the settings so it runs like if it's connected to the AC?
     
  5. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #5
    Depends on what you're doing, could be as much as 50-60%.
     
  6. Sdahe thread starter macrumors 68000

    Sdahe

    Joined:
    Oct 26, 2007
    Location:
    San Juan, PR

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