Xbench recognises 12" PB as 534Mhz!!!

Discussion in 'Macintosh Computers' started by vrapan, Aug 16, 2003.

  1. macrumors regular

    Joined:
    Jul 16, 2003
    Location:
    UK
    #1
    I wanted to give my machine a little test before I install an extra 512MB RAM and I used Xbench to do that... But whenever I saw the results page it recognised it as 534MHz - btw it was on highest performance on the Energy Saver Panel. Do you have any ideas why that might be - other 12" PBs were recognised on the list correctly. Thanks to everybody
     
  2. macrumors 6502a

    RGunner

    Joined:
    Jul 3, 2002
    Location:
    Midnight Sun
  3. thread starter macrumors regular

    Joined:
    Jul 16, 2003
    Location:
    UK
    #3
    yes it is plugged in but i have never zapped p-ram. do you know of any side effects from zapping p-ram and could you tell me how is it done.
    thanks a lot
     
  4. macrumors 6502a

    RGunner

    Joined:
    Jul 3, 2002
    Location:
    Midnight Sun
    #4
    Typically...

    should not be any ill effects, it may reset default screen resolution and other hardware items to factory settings..

    its a common practice for macs throughout the ages...

    read up on it at www.apple.com if you are curious, the command is:

    apple-option-P-R held down at same time, while turning on power, listen for 3 beeps and then release the keys being held.

    typically used to reset power management settings amongst other things.

    good luck
     
  5. macrumors 604

    iJon

    Joined:
    Feb 7, 2002
    #5
    there are no side effects, its a good thing to when thing are just messed up. its like washing your car when its dirty.

    apple option p r

    iJon
     
  6. thread starter macrumors regular

    Joined:
    Jul 16, 2003
    Location:
    UK
    #6
    thanks a lot guys. it now registers it as 867MHz as it should and for reference - i dont know if the :
    apple option p r still works for a 12" and 17" pbs but Apple's documentation says

    Shift ctrl option power for 5 seconds
     
  7. Moderator

    Nermal

    Staff Member

    Joined:
    Dec 7, 2002
    Location:
    Whakatane, New Zealand
    #7
    Shift-Ctrl-Option-Power resets the power manager. Resetting the power manager zaps the pram as well as resetting some other things such as the clock.
     
  8. macrumors regular

    Joined:
    Sep 27, 2002
    Location:
    in Limbo
    #8
    The processor might actually be running at 534 MHz, to avoid the overheating, of the laptop processor sometimes runs at lowerfrequency that's very normal. I think you can check this stuff out at Apple's webiste. Apple also had an article about the 1 Ghz PowerBook running at 667 Mhz at full load (to prvent the processor from getting overheated). The portable processor is going to operate at lower frequency even if you chose "Maximum Performance" in the "Energy Savings" panel. All the laptops manufactured use this technique (Wintels and Macs).
     

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