What value is correct of base speed in task manager?

Ivan Chen 0 Reputation points
2023-07-20T07:24:58.2066667+00:00

My CPU is Intel 12th i5-1245UE & OS is Win10-21H2(19044 build) IoT LTSC.

The base speed in task manager shows: 1.5HHZ when Intel speedstep & speedshift are enabled.

The base speed in task manager shows: 2.5HHZ when Intel speedstep & speedshift are disabled.

Question1> If this result is correct?

Note: I tried test under RPL platform(Same OS), base speed value is the same whether enable speedstep & speedshift or disable speedstep & speedshift.

Question2>Why base speed is changed after disabling Intel speedstep & speedshift?

Question3> Why Intel speedstep & speedshift setting will affect to base speed?

Question4> How to determine base speed by Windows OS? What is register or address Operating system to catch for base speed?

Thanks.

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  1. Castorix31 81,831 Reputation points
    2023-07-20T14:00:31.29+00:00

    SpeedStep changes the frequency, as explained in Intel docs :

    https://www.intel.com/content/www/us/en/support/articles/000007073/processors.html?wapkw=speedstep%20frequency

    or

    https://www.intel.com/content/www/us/en/gaming/resources/turbo-boost.html?wapkw=speedstep%20frequency

    "When handling light workloads, the CPU runs at the base frequency listed in its specifications. (Or lower, when the energy-saving Intel SpeedStep® technology scales CPU speeds.)"

    or

    https://www.intel.com/content/www/us/en/support/articles/000007382/processors.html

    "Intel® SpeedStep® Technology allows the system to operate in maximum performance mode when plugged into an AC power source. When running on battery power, the system operates in battery-optimized performance mode. Enhanced Intel SpeedStep technology allows the system to dynamically adjust processor voltage and core frequency according to the power source and application demand. The adjustments result in decreased power consumption and decreased heat production."

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  2. Limitless Technology 43,971 Reputation points
    2023-07-20T14:13:48.7+00:00

    Hello there,

    "Base Speed" under the "Performance" tab when you have multiple processors or CPU cores. The "Base Speed" represents the nominal or default speed of the processor.

    However, it's important to note that this value may not be the current operating speed of your processor. Modern processors often have dynamic clock speed technologies like Intel's Turbo Boost or AMD's Precision Boost, which can increase the CPU's clock speed above the base speed when the system demands more processing power.

    To get the most accurate and up-to-date information on your processor's speed, you should refer to the "Speed" or "Clock Speed" column in the Task Manager's "Performance" tab. This column shows the current operating speed of your CPU, which can vary depending on the load and thermal conditions.

    Keep in mind that the appearance and layout of Task Manager may have changed since my last update, so the specific details could be slightly different in more recent versions of Windows.

    I used AI provided by ChatGPT to formulate part of this response. I have verified that the information is accurate before sharing it with you.

    Hope this resolves your Query !!

    --If the reply is helpful, please Upvote and Accept it as an answer–

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