everest can pull data from a sensor on some boards to tell the current wattage of the cpu, but not all boards have the sensor
How accurate do you think that is I am not sure if those sensors tells the real amount of power used. The best way is to get a kill o watt meter. To figure out each component what you do is take every component out of computer just boot with the bare min get a reading then start adding 1 component at a time and take a reading each time at idle and full load this is the only real way to do what you are asking.
that'll take a long time...
Yes it would but it would answer his question lol.