In message <[email protected]>, Bryan
Irvine writes:
>I was thinking of getting one of these little guys in my house. My
>excuse? Power savings over the existing firewall. I remember seeing
>something a long time ago that compared the cost savings of a full
>desktop firewall and a soekris, and basically the soekris pays for
>itself within x amount of time. I was wondering if anyone had a link
>to power comparisons.
The savings depend on your price of electricity, every watt you burn
24*365 will cost you:
R * 24 * 365 / 1000 = P
Where R is your electricity rate in ${money} per kWh
and P is ${money} per year.
In my case:
1.83 * 24 * 365 / 1000 = 16.030 DKR (= USD2.75 = EUR2.15)
A NET5501 seems to run at 4-5 Watts, whereas the typical old PC,
without monitor, will run at around 50-100 Watts.
A conservative savings is therefore 45W = 720 DKR (= USD125 = EUR97)
Optimistically you save 95W = 1520 DKR (= USD262 = EUR204)
But obviously, this varies a lot according to your electricity rate.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
[email protected] | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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