Since everyone is talking about Green IT and saving power and stuff, I thought I'll have to do some research of my own. Therefore I got myself a Conrad Energy Logger 3500. A nice little tool, that allows you to keep an eye on your electrical expenses. Besides measuring Power, Current, Voltage, Line Frequency and Power Factor, it also allows you to do some longterm measurements, storing all the data on standard SD cards. Really handy.
Anyway, here are now some early observations. First, the standard desktop gear (mostly old systems with onboard graphics):
| Standby (W) | Idle (W) | Load (W)
|
Asus M2NPV-VM, A64 X2 3800+ CnQ, 4GB, 2x1TB WD Green
| 6 | 55 | 120 |
Asus CUV4X-DLS, Dual P3 933, 2GB, 7x160GB
| 5
| 99 | 145 |
Foxconn 6150K8MD, A64 3000+ w/ CnQ, 2GB, 2x250GB
| 6
| 63
| 85
|
in contrast to this, some "power-optimized" equipment:
|
|
| Idle (W) | Load (W)
|
Cobalt RaQ4, K6-2/500, 256MB, 2x40GB
|
| 24 | 40 |
| Cobalt RaQ3, K6/350, 128MB, 1x30GB |
| 19 | 31 |
| PC Engines WRAP-2E, Geode 266, 128MB, Hifn 7955 |
| 4.7 | 5.2 |
| PC Engines ALIX2C2, Geode LX800, 256MB, Winstron CM9 |
| 6.9 | 8.8 |
| Thomson Speedtouch ST 546 v6 (DSL Modem) |
| 8 | n/a |
Its really amazing how energy efficient those little PC Engines boxes are! Ideally suited for firewalling, VPN connections and WLAN access. However, also rather interesting, the rather low power consumption of those old Cobalt RaQs; no wonder they were once very common in datacenter environments.
Just for the fun of it .. I also did some measurements on my Playstation 3 ...
|
|
|
|
|
Playstation 3, 80GB (now w/ 250GB) -> Power Off / Standby
|
|
| <2W |
Showing MainMenu (Idle)
|
| | 122W |
Running Folding@Home (Playstation Life)
|
|
| 125W
|
Running MP3 Player (Space Thingy)
|
|
| 125W
|
Running MP3 Player (Color Thingy)
|
|
| 132W
|
Playing Oblivion - The Elder Scrolls IV
|
|
| 132W
|
Standby power consumption is fine, but idle power consumption is definately NOT! also 132W might be acceptable for playing games, 125W playing MP3s is NOT! ... *hmpf* ... bad Sony! ... Guess I should look for a new MP3 player ... ;-(
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