Higher CPU Utilization on Battery?!

Discussion in 'Microsoft Surface Pro 4' started by SteveBorough, Jan 5, 2016.

  1. SteveBorough

    SteveBorough Member

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    Just realized something extremely weird. SP4-i7, while running a few tasks (kodi & Edge) I noticed my fan came on so I launched the Intel Extreme Tuning Utility to see what was going on. CPU utilization hovers between 15 - 20% but I noticed that if I unplug the power adapter CPU utilization shoots up to between 25 - 30% and hovers there instead. Isn't the exact opposite supposed to happen. Why is the CPU more heavily tasked when on battery?!! Power management/thottling on this device is an absolute sh*t-show!

    Update: I noticed that on battery the package TDP drops to 6W but CPU utilization shoots up 15 - 20% causing the device to get hot and fan kicks in. Essentially given more wattage the CPU is more efficient and runs cooler? I'm curious as to the trade off (high wattage, low utilization vs low wattage, high utilization)

    will post video tomorrow
     
    Last edited: Jan 5, 2016

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