low rpm fans, don't hear them and they take forever to wear out.You should care because fan noise is a function of power, even at idle.
I shut mine off when not in use along with the display and the speakers.I don't know your specific circumstances, but most computers spend 99.99% of their life "in the drive thru".And I feel that load consumption is also extremely important
never said you didn't, understand my comments were more surprise in that idle consumption on desktop is now worth speculating about.
as mentioned previously in regard to mobile I see the point but desktop?... really?