undervolt 0 'CPU' does nothing

[Haptein]

Setting undervolt values for 'CPU Cache' works just fine but setting values for 'CPU' does nothing on my 9750h.
I tested at at different values and saw no difference on temps, power draw or freqs. For reference, doing so in Throttlestop (Windows) shows very tangible differences up to -250mV. I didn't touch anything else on the conf file, just these values.

Srry for the edits. Pressed enter by mistake.

[hibby50]

On my 10310u I am seeing the same. I did -1000 just to confirm and the system stayed up