Gop back to school, whatever school you went to return your certificate saying you slept in basics physics.

Per basic physics it means 1kwh heat - other energy output which is sound (VERY little) and anything else.

People learn this in 5th grade here. Energy preservation.

ESPECIALLY: YOU CAN NEVER HAVE MORE HEAT THAN THE ENERGY YOU USE. This is when you burn something the inner energy (exothermic reaction) bu a computer does not use up any fuels, you know.