measuring power usage

[Trent Piepho]

I seem to recall reading in a mailing list, I think this one, about a
relatively inexpensive device that would measure the real wattage and power
factor of electronics.  I think that someone on the list bought one and posted
a review.  Does this ring a bell with anyone?  I'd like to get some real
numbers about what our cluster is drawing and how much we capacity we have for
new hardware.

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