RE: Power supply efficiency on older model Sun equipment

On Thu, 28 Aug 2008, Lewis, Ben (Ben) wrote:

> >Has anyone seen information on the power efficiency rating of Sun power
> supplies?  In my case I'd be curious about the Ultra 1 I'm currently
> running a web site on.
>
> Hi Donald
>
> That's just the kind of thinking I've been going through.
>
> Craig Dewick has all the info in the Sun Systems Handbook on his great
> site :-
>
> http://www.sunshack.org/data/sh/2.1.8/infoserver.central/data/syshbk/Sys
> tems/index.html
>
> I see the Ultra1 in EOL models list (scroll down).
>
> Here's it has for my SunBlade 1000 :-
>
> AC input  		100 - 240 VAC, 47 - 63 Hz, 8 A(max), 0.875 KVA
> Input power 	670 W
> Heat output 	2286 BTU/hr
>
> Fortunately it is able to spin down drives etc when not it use.

I believe that the figures shown in the Sunshack list and indeed
in most specifications is the maximum consumption, and that the
actual consumption is somewhat lower and much depends on the
configuration.

For example, the Ultra 30 and Ultra 60 both are shown to consume
0.4kVA, yet the U60 usually contains more power consuming
hardware.

One day I will measure the consumption of my U60, but that means
taking the system down, something I don't want to do right now.

Of course, the same applies to X86 hardware too, I am sure that
the 450W power supply in my AMD box isn't drawing anything
like its maximum load.

Geoff

PS Very much off topic, does anybody know where I can get a
memory module for a HP 9000 series 320 or similar

-- 
    Geoff Blake G8GNZ      located  near  Chelmsford,  Essex,  U.K.
    Please reply to:      geoff(at)palaemon(dot)demon(dot)co(dot)uk
    Using Linux on  Intel & Linux  or NetBSD on Sun Sparc platforms

    Please  avoid  sending  me  Word  or  PowerPoint  attachments.
    See    <http://www.gnu.org/philosophy/no-word-attachments.html>
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