the speed of the processor is limited by system firmware


  1. wub901
    Posts : 10
    Windows 7 Professional x64
       New #1

    the speed of the processor is limited by system firmware


    OK so I have just got an ASUS N551JX it has an i5 4200h 8gb ram 128gb ssd and 1tb hdd it cam with win 8.1 where I was getting "the speed of the processor is limited by system firmware" every time I stared gaming on the laptop I upgraded to win 10 after making a backup with asus backtracker and continued to receive the warning in event log every time I started gaming

    But then it got interesting when I installed win 7 pro as it seems win 7 does not require the intel CPPC driver and it seems so far than the warning of "the speed of the processor is limited by system firmware" has now gone when gaming.

    it also seems that the CPU is not longer being throttled.

    Processor 0 in group 0 exposes the following:

    2 idle state(s)

    16 performance state(s)

    0 throttle state(s)

    so im guessing the CPPC driver throttles the cpu ?
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  3. rvcjew
    Posts : 1,992
    10 Pro x64
       New #2

    Correct it's designed to limit the voltage and speed, and therefor heat output of the cpu to make the battery last longer. It's like the Intel Dynamic Platform & Thermal Framework Driver it would seem.
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  4. wub901
    Posts : 10
    Windows 7 Professional x64
    Thread Starter
       New #3

    rvcjew said:
    Correct it's designed to limit the voltage and speed, and therefor heat output of the cpu to make the battery last longer. It's like the Intel Dynamic Platform & Thermal Framework Driver it would seem.
    OK so now my question is how do I go about disabling this in win 8.1 or 10 ?
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