Processor performance: Highest, Reduced, Auto

Discussion in 'Mac OS X 10.3 (Panther) Discussion' started by alphaq619, Mar 28, 2004.

  1. alphaq619 macrumors member

    Joined:
    Mar 10, 2003
    Location:
    Bay Area
    #1
    I was at the Apple store today and I noticed on the 12" PowerBook, I went into the Energy Saver Preferences. I noticed under Processor Performance, there were 3 settings, Highest, Reduced and Automatic.

    I'm sitting here at my 12" (Rev A) and I notice I don't have the 3rd setting: automatic. Is this a feature of the 12" Rev B, or am I missing something?

    Again, I have a 12" 867 MHz and I just upgraded to 10.3.3 from 10.3.1. Any thoughts?
     
  2. cjc343 macrumors 6502

    Joined:
    Jan 6, 2004
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    In the apple store, in front of a G5.
    #2
    I don't know why that is, but in case you are wondering... Automatic runs at lower speeds unless it NEEDS to run faster, I have generally found it to be inadequate.
     
  3. johnnyjibbs macrumors 68030

    johnnyjibbs

    Joined:
    Sep 18, 2003
    Location:
    London, UK
    #3
    What did your PowerBook default to? I have the rev B 1GHz 12" and I do have the third setting, which it was on my default. Maybe it's new. However, I find that I put it on Highest setting when plugged in, Automatic when I'm on battery. Everything is silky smooth (e.g. minimising, expose, etc) on Highest setting but the fan comes on more often (predictably).

    It must just be a new feature. I read in a help file that not all computers have it. Maybe it's in response to the overheating rev A's or something. I wouldn't worry about it.
     
  4. alphaq619 thread starter macrumors member

    Joined:
    Mar 10, 2003
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    Bay Area
    #4
    I also posted this on the Apple discussions forum and a member told that it is a feature of the rev B PowerBooks. Too bad for me. Thanks for the replies though.
     
  5. MoparShaha macrumors 68000

    MoparShaha

    Joined:
    May 15, 2003
    Location:
    San Francisco
    #5
    Well, if it makes you feel any better, I have a rev. B 12", and I don't even use automatic. It's not that great. On battery, I keep it on reduced, just to maximize battery life. When plugged in, I've got it on highest, because automatic just can't respond fast enough. It's much smoother overall in highest mode.
     
  6. blue&whiteman macrumors 65816

    blue&whiteman

    Joined:
    Nov 30, 2003
    #6
    does reduced speed really save that much battery juice? is it worth the lowered performance?
     
  7. Horrortaxi macrumors 68020

    Horrortaxi

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    Los Angeles
  8. johnnyjibbs macrumors 68030

    johnnyjibbs

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    Sep 18, 2003
    Location:
    London, UK
    #8
    The Automatic setting basically keeps the processor at Reduced unless you do some heavy tasking work such as Photoshop blur or such like, when it switches to the Highest setting. Therefore, Automatic does not really use up more juice unless you are doing intensive tasks. However, I don't like Automatic because it means you are running on reduced the whole time usually, so dock magnification adn the general GUI, etc isn't as silky smooth as it would be otherwise.
     
  9. ExoticFish macrumors 6502a

    ExoticFish

    Joined:
    Dec 3, 2002
    Location:
    The inner depths of madness, aka Kent, OH
    #9
    i tested out the difference between automatic and high when my machine was plugged in with xbench and the automatic setting got a lower score every time, that's when i switched it to high! :rolleyes:
     
  10. Danrose1977 macrumors regular

    Danrose1977

    #10
    Same with my iBook....

    I'm still getting around 5-6 hours constant use on high though, so I don't really see it as a major issue.
     
  11. jxyama macrumors 68040

    jxyama

    Joined:
    Apr 3, 2003
    #11
    i think it does. my undocumented experience is that i can get about an hour more on reduced performance... (say, 3 hrs vs. 4 hrs.)

    another gauge is iTunes ripping speed. reduced goes up to about x4 but highest performance goes up to around x7.

    if you are off the mains and just want to surf the web and email, i don't think there's any downside to using reduced performance. if i run heavy apps, like iMovie or emulators, i do notice the reduced performance so i usually plug my PB in, if that's an option...
     
  12. ingenious macrumors 65832

    ingenious

    Joined:
    Jan 13, 2004
    Location:
    Virginia, United States (Kansan in exile)
    #12
    ill check

    ill check on my PB tomorrow when I'm back at school.
     

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