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

Joel Jaeggli joelja at bogus.com
Fri Jul 13 15:05:24 EDT 2007


Mikhail Kuzminsky wrote:
> 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) ?

Conversion efficiency, from the ac input to the dc output...

Put ac in get dc out and 10-40% percent of the energy is exhausted from
the powersupply as heat.

generally efficiency will vary for a given power supply across some
range based on load...

> Yours
> Mikhail Kuzminsky
> Zelinsky Inst. of Organic Chemistry
> Moscow
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