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Re: [OCLUG-Tech] power usage

On Sat, 2007-04-14 at 01:38 -0400, Stephen Gregory wrote:
> I borrowed a decent ammeter from work to measure the power usage of  
> some computers. 
I borrowed a kill-a-watt meter from the library and did some
measurements at home. With that you can measure power usage over time
and get a better longterm value even for on-off things like the fridge.
I then took my hydro bills, looked at how many KWh I used and divided
that with how many $$ I paid and came up with that with all different
fees, taxes etc 1KWh cost me about 12cents.

A sample of what I measured:

What
Kw/h
$/ Mth
Dell D2026T monitor – on
                    0.11
                   $9.64
Dell D2026T monitor –
PowerSave
                   0.003
                   $0.26
Sun GDM5410 Mon on
                    0.11
                   $9.37
Sun GDM5410 Mon
PowerSave
                   0.004
                   $0.52
Box Freezer 
                    0.05
                   $4.16
Fridge (11 h overnight)
                    0.09
                   $7.73
Picard, AMD 3000+ – max
load
                    0.13
                  $11.40
Picard power off
(standby)
                    0.01
                   $0.43
Picard Bios – no disk
                    0.09
                   $8.06
added hda
                     0.1
                   $8.50
added hdc
                    0.11
                   $9.19
added sata1
                    0.12
                  $10.14
added sata2
                    0.13
                  $11.10
Kira, P4 3GHz, 3 disks
                    0.14
                  $12.26
sisko, 2x Opteron 246,
4x250G disk, 4x512Mb
                    0.23
                  $19.83
NetApp Fibrechannel
Disks, 1ps, 3disks
                     0.1
                   $8.24
NetApp Fibrechannel
Disks, 2ps, 3disks
                    0.11
                   $9.19
NetApp Fibrechannel
Disks, 2ps, 7disks
                    0.14
                  $11.82
12Disk fc with 8 disks
                    0.26
                  $22.81
HP LJ 4000N, power save
                    0.02
                   $1.38
Dell PE6650 with 4
Drives
                    0.26
                  $22.32
Compaq PL1850R
                    0.13
                  $11.13

I now bought a kill-a-watt from
http://www.thinkgeek.com/gadgets/electronic/7657/ and keep on measuring
more things. 


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