[K12OSN] Re: alternate power supplies

[Huck]

Ah...it did seem too good to be true when I wrote it...
and you are correct..it was applied to the cost of a single unit...
and minus labor costs...just looking at the energy savings alone, not 
time spent in reburbishing/troubleshooting.

I sit corrected in my flawed example =)
although... if you are purchasing thin clients a-new then the 10-watt 
variety aught to be saving you money vs. the 100-watt variety =)

--Huck

Ben Mabbott wrote:

> Huck wrote:
>
>> YEStation Mini(http://www.affirmative.net/extrathin.html#mini) cost 
>> $249 msrp...
>> at $0.07 per kWh(kilowatt hour) .. 8hrs a day(50 weeks a year) the 
>> cost of a 100-watts for that time period for 10 machines = $140
>> divide that by 10 for the Mini's...$14 a year...a savings of ??? 
>> $126... the mini pays for itself in energy savings in 2yrs.
>
>
> Actually, it's a lot more than 2 years. You're using 10 mini's to 
> figure the savings in electricity, but then only applying that to the 
> cost of one mini when figuring the time it will take for them to pay off.
>
> 10 Mini's x $249 per Mini = $2490 / $126 savings per year = 19.76 
> years. Looks like his engineer was pretty close after all :)
>
> So if the goal is saving electricity, these look great. Even if they 
> don't live up to their full potential of using %10 of what a regular 
> client uses, it will still be significantly less. However, if the goal 
> is saving money, they don't appear to be worth it. It's very unlikely 
> that the same clients would be used for 20 years. Computers 
> (especially in a school environment) generally don't have that kind of 
> lifespan :)
>
> -Ben
>