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    Please help, CPU allways runs at full speed.

    Discussion in 'Dell' started by sbp, Oct 2, 2007.

  1. sbp

    sbp Notebook Enthusiast

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    Hi my first post here.
    I just got my M1330, and upgraded to Vista Buisiness (had my trouble with the SATA AHCI - problem) but managed by installing the drivers from a USB stick.

    But now my CPU is running at full speed all the time 2000 MHz (T7300). I have checked the Bios and Speed trap is enabled, in my power settings the Min cpu is 5% and max is set to 50%, I even tried 25% - but it didn't change anything.
    Is there something I haven't installed, that I need in order to let Vista throttle my CPU down.
    Steen
     
  2. TuxDude

    TuxDude Notebook Deity

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    Try using CPU-z to monitor the realtime clock frequency.... I guess you are using the clock rate reported by Vista in System Properties which gets updated only after every restart...
     
  3. sbp

    sbp Notebook Enthusiast

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    Thanks for the reply, I will try that.
    But I was getting my CPU speed from I8kfanGUI, and it was changing a little between 2005-2015.
    I will replort my findings using CPU-z
     
  4. majortom1981

    majortom1981 Notebook Consultant

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    Also look at the cpu usage in task manager. if the processor is say running at half speed then it would look to be higher then normal.
     
  5. sbp

    sbp Notebook Enthusiast

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    Thank you for your answers. I'm a little confused about my results.
    RMClock states that the CPU clock is 1595 mHz, multiplier x8 and CPU throttle is 798.
    So what does this tell me? What is the CPU throttle value, is that the actual speed of my processor?

    CPU-z also says core speed is 1595 and multiplier x8. But it doesn't show any throttle speed.

    I8kfanGUI still shows a CPU speed of 2009 mHz - so obvious it must be wrong.

    Thanks
    Steen
     
  6. deadsimple

    deadsimple Notebook Consultant

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    On both my desktop PC and laptop, the "Core speed" fluctuates to show the current speed.

    (The multiplier also changes in real-time)

    What version do you have?
     
  7. sbp

    sbp Notebook Enthusiast

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    Hi I use CPU-z 1.41.
    The core speed changes a little bit, between 1595.5 to 1595.9, the multiplier is always x8.

    What about my RMclock question can somebody please explain.
    What are the difference between CPU speed and CPU throttle speed in RmClock.
    Is it best to have a high or low throttle value, in order to keep your Fan quit.
    Thanks
    Steen
     
  8. seehee2k

    seehee2k Newbie

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    Got exactly the same problem here. After a clean install and updating all drivers I was curious about speed step and power saving. So i tried different tools (including NHC, I8kfanGUI and CPU-Z). NHC and I8kfanGUI always show about 2,2 ghz, no matter what Vista power management option I choose. CPU-Z says my CPU runs at 1596 Mhz @ 0,850 V if I'm in Vista's battery saving mode. By switching to high performance its constantly switching between 1,2ghz @ 0,850 V an 2,2 @ 1,230 V.