[Beowulf] power usage, Intel 5160 vs. AMD 2216

[Mikhail Kuzminsky]

In message from Mark Hahn <hahn at mcmaster.ca> (Thu, 12 Jul 2007 
18:17:51 -0400 (EDT)):
>one interesting thing is that PSU's are most efficient near their max 
>load.
> ...
>Don, how do you measure efficiency?
   
   Sorry - the stupid question :-)

What *is* PSU efficiency: input_power/output_power (to server parts) ? 

Yours
Mikhail Kuzminsky
Zelinsky Inst. of Organic Chemistry
Moscow