> Only a percentage of the power will be dissipated as
> heat energy.
> This is what the term "efficiency" is all about.

Oh, and where does the rest of it go?  In a computer system, effectively all
of the input power goes to heat.  Unless you are deliberately transmitting
power to somewhere else, like driving a shaft or emitting electromagnetic
waves, virtually everything ends up as heat.

Of course it does depend on what the "enclosure" is you are considering.  If
you are only care about the power supply itself, then figure about 20% to
25% of the input power heats the supply.  If you are looking at the whole
computer system, then the remaining 75 to 80% ends up as heat too.


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