New 15" Powerbook 1.67GHz not supporting DFS (speed stepping)?

Discussion in 'Macintosh Computers' started by Sooper, Oct 22, 2005.

  1. Sooper macrumors newbie

    Jun 3, 2005
    In the energy control panel on my brand new 15" powerbook HD, there is not an option for "Processor Performance" like on my 12" 1.33 iBook.

    Perhaps the new 15" Powerbook has a 7447, and not a 7447A G4? Seems absurd.

    I also tried to load FastAndSlow, and it stated my machine did not support DFS (Dynamic Frequency Shifting)!

    Is there anyway I can tell for sure, short of opening up the case. I tried to load CPU Director, but it complained that 'Kext' could not be loaded.

  2. Bear macrumors G3

    Jul 23, 2002
    Sol III - Terra
  3. Sooper thread starter macrumors newbie

    Jun 3, 2005
    CHUD tools is reporting 7447A; so DFS is definately supported in HW and it looks like the user option has been removed in favor of something entirely automatic.

    The battery life on my new 15" PB is far below that of my 12" 1.33 iBook; that's what led me to the conspiracy theory that the PBs went to 7447 chips.

    I was also hoping the chips were actually dual core, and I just had to put in the correct unlocking code to activate the other core. Up, Up, Down, Down, Left, Right, Left, Right, B, A, B, A, Start was not the correct sequence... ;)
  4. chucknorris macrumors 6502a


    Jun 28, 2005
    Moscow, ID (No Kremlin here!)
    I don't think you put the code in quickly enough! Please try again. :p
  5. nospleen macrumors 68020


    Dec 8, 2002
    At least now you have unlimited lives in Contra.
  6. fklehman macrumors regular


    Sep 19, 2005
    Newark, DE
    Yarghhh. I wonder what the implications for gaming are. So if I play WoW for 15 minutes and the computer heats up, the processor is going to slit its own throat as per DFS and I have no way to stop it? Anyone know a way to at least monitor what is happening with DFS, and see what factors cut the speed in half (a certain temperature, etc.)?
  7. Demon Hunter macrumors 68020

    Mar 30, 2004
    So the DFS is basically behind-the-scenes? Ridiculous.

    First the iBooks get more RAM than the 12" PowerBook, and now this.
  8. Punani macrumors regular


    Jun 16, 2004
    Los Angeles

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