Question for the electrically minded.

I have a laptop with a 19v input.

I have a portable UPC with 2 voltage options in the range of this, I can undervolt at 16v (the laptop battery voltage) which works with a small firmware correction to ignore a board sensor, the other option is to slightly overvolt to 19.5v which I assume the laptop could handle through its input regulation.

Can anyone confirm if a .5v variance at charger is within tolerance? It would be an overvolt of 2.5%

I have this fixation with minmaxing core clocks, voltages and their respective curves (P states, basically). I'm still not sure how much it actually improves my experience, but I'll be damned if it isn't fun and interesting to mess around with these numbers and see them climb higher but remain stable.

Currently messing around with a Vega 64. They come in severely overvolted, and I'm trying to get it to retain its performance with less voltage aka less heat. I don't even need to turn on central heating if I'm running stress tests, the bloody thing runs at 80°C! So I guess you can see why undervolting the card is of interest

Not a rant, but was wondering:

If I undervolt Ryzen 5 3600 using Ryzen Master from windows, do I get the changes when I boot into my Linux distro? 🤔