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Watts delta between Idle and 100%

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Feb 26, 2002
I got a new APC UPS on one of my machines and it gives real time
readings of the power consumption of the system. This system
has an old 733 MHz P3.

What I find interesting is the power difference between idle
and 100% CPU. In this case it's 21 watts.

Anyone else have an APC UPS or other way to see your power
change from 0 to 100% CPU utilization?