Something causes overclocking on laptop

  1.    25 Oct 2017 #1

    Something causes overclocking on laptop

    The first symptom was the laptop fan would run continuously.
    To investigate, I started Task Manager and looked at "Performance". Performance shows "Maximum Speed" is 2.40 GHz
    But the actual utilization speed was consistently running at 2.85 GHz or thereabouts - running steadily over the rated 2.4 ghz

    The fan stopped running and the CPU speed dropped back to normal after I "looked" at Google Backup and Sync in the System Tray.
    (I "looked" at a lot of things in Task Manager - trying to figure out what might have been responsible for the overclocking.)

    I'm at a loss for what might be causing this. . .the fan has come on a few times since then but by the time I open Task Manager the CPU speeds drops back to below it's maximum.

    Any ideas as to what causes overclocking? (I've never experimented with anything to do with CPU performance.)
    If it happens again, any ideas as to how to find out what causes the overclocking?
      My ComputerSystem Spec

  2. bro67's Avatar
    Posts : 5,240
    Mac OS High Sierra 10.13.5
       25 Oct 2017 #2

    Nothing is overclocking the CPU, unless you go in and make those changes in the bios. A CPU can actually be faster for all cores than what the spec sheets state. As the OS gets to know the hardware, it will adopt and actually run at what the CPU will do, which as it looks you have a bit faster than you thought. Download Z-CPU and see what it shows. As for the fan running, that happens when the CPU gets locked into a process that needs all of the CPU to complete its task.
      My ComputerSystem Spec

  3. philc43's Avatar
    Posts : 3,751
    64bit Win 10 Pro ver 1809 Build 17763.168 and W10 Insider Build 18290
       25 Oct 2017 #3

    It could be the Intel Turbo Boost technology causing this. You will find this in the BIOS - it is Intel's way of utilising the processor to its best and is perfectly normal.
      My ComputersSystem Spec

  4.    25 Oct 2017 #4's your turbo boost....see here
    This is an excerpt from that link.

    • # of Cores2
    • # of Threads4
    • Processor Base Frequency2.40 GHz
    • Max Turbo Frequency3.00 GHz
    • Cache4 MB
    • Bus Speed5 GT/s DMI2
    • TDP15 W
    • Configurable TDP-down Frequency600 MHz
    • Configurable TDP-down7.5 W
      My ComputerSystem Spec


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