Once I borrowed some rather cheap, eh, device to test how much electricity my stuff takes:
all measured while booting in the first few seconds (after hdd has spinned up)
60,7 for the whole system (except monitor), its a Celeron 366@458, 1x32 MB, 1x128 MB, 1x256 MB
59,8 without keyboard
54,3 without " - gf2mx
53,7 without " - " - dsl nic (realtek 8139)
49,4 without " - " - " - other nic
50,7 without " - " - " - " + with another nic
47,7 without " - " - " - " - only 32 MB RAM
43,5 without " - " - " - " - " - 1 Seagate Barracuda 13,6 GB and Maxtor DiamondMax 13 GB
22,8 without " - " - " - " - " - Celeron 366@458
51,7 without " - " - " - " - " + with SB16
starting from the full system
- stands for without
+ stands for with
If you want you can calculated which component takes how much electricity.
Computer off: 2,6. Standby: 34,8. Idle: 54,8. grabbing: 59. MP3 Encoding: 70,4. moving files: 60.
Monitor 17": 40-55
Monitor 15": 30-40
old big TV: 60-70 Watt
hair dryer took over 800 watt.
Continued with testing and noticed that my 2 P1 boards differed alot. Like 10 watt the standard board took more than the station board (with everything on board).