Undervolting: experiences and foreign countries

I am thinking about undervolting my 7801u. It runs everything perfectly and it doesn't heat that much, but I think it would be good to lower the readings anyway.

But, first of all, I need to be certain about something. As my profile says, I am from Argentina, and I'm in the States only for the season. In my country we have 220v, so I want to know if that change in the voltage would cause any trouble with the undervolted CPU. Maybe if I undervolt it here with 120v and then I take it to a place where I will be using 220v everyday...? I really don't have the least idea, so I would appreciate any help.

Second, I would like to know about people who undervolted the 7801/7805 before. Is there anything I need to take into account?

 

The purpose of the AC adapter in laptops is to supply the computer with the correct voltage and current, regardless of the country.

 

I am no electrical science expert, but since your laptop has a power adapted that converts a wide rage of AC input to a specified DC output, you should not see any issues. The DC output is the standard your laptop uses and should not vary, as long as your AC input is at the allowed range designated by the adapter.

 

there should be a sticker on your ac adapter. see if the specs listed envelopes the ac output in your country. it should be fine, most adapters now support 100-250v @50-60hz.

 

You are fine i live in the Netherlands (Used to live in Virgina) and had to switch from 120V to 220V

All i did was swap the 3 Prong cord and i was good to go

Your Power adapter automatically switch the Volts and Amps for you

3 prong notebook cords are cheap around 2 to 3 euros here in the Netherlands