I bought a new power supply for my notebook. It almost doesn't get warm while the other gets really hot. How is that possible? Otherwise, both work just as well and are the same age.
Be happy
Absolutely!
Yes, that's a good thing
And that's a problem right now because?
The old power supply will have used older technology that produced more waste heat. Save yourself electricity and air conditioning…
I would be interested in the technical basics. Were poorer components used in the old power supply?