Y50-70 (i7-4720HQ): Extreme changes in CPU idling power between AC and DC mode

Discussion in 'Lenovo' started by jyggalagga, Jun 9, 2018.

  1. jyggalagga

    jyggalagga Newbie

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    AC idling: 10 W
    DC idling: 4 W

    This is regardless of power plans. I've created a custom plan (based on "power saver" with everything set to the minimum) that is 100% identical for AC and DC mode, including the hidden powercfg settings. Battery level makes no difference, either.

    CPU speed is the same (800 MHz).

    CPU load is the same (negligible).

    C-states are the same, around 99% in C7. (Or at least I think so, ThrottleStop is a little confusing.)

    Everything is the same, except power draw (and temps).

    I have no idea where to go from here. All I want is that when plugged in, the CPU idles at 4 W rather than 10 W. Can someone please help me?

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