PC - power consumption

Source

How much power does your computer use?

These tests might give you some idea about it.
Multiply all price values with [pw]
Enter price per kW in the input field. Price in Denmark.

All test has been performed with 220-240 volt in Denmark.

P = U * I (if you didn't know)
Watt = Volt * Ampere
Price = [price per kWatt per hour] * kWatt

Example

TestAmpereWattPrice/hourPrice/dayPrice/30 daysPrice/year
Example 1.00 A => kW = 220 * A / 1000 1 A220 W0.4400 10.56 316.80 3854.40
Example 0.4545 A => 100 W 0.4545 A99.99 W0.2000 4.80 144.00 1752.00

Linksys NSLU2 133MHz 32MiB RAM 40GB hd

Can run 266MHz.
OS: Linux 2.4.22 Debian
Date: 2006-05-06
TestAmpereWattPrice/hourPrice/dayPrice/30 daysPrice/year
Linksys and External 40GB hd
24 hour test = 0.336kW		 0.063 A13.86 W0.0277 0.66 19.94 242.65

Pentium 100MHz desktop 32MB RAM

Tested with monitor connected via the computer.
OS: Windows NT 4.0 sp3
TestAmpereWattPrice/hourPrice/dayPrice/30 daysPrice/year
Booting, HD active, 800x600 0.48 A105.6 W0.2112 5.07 152.06 1850.11
Booted, HD idle, 800x600 0.45 A99 W0.1980 4.75 142.56 1734.48
Booted, HD idle, 800x600, white colors 0.498 A109.56 W0.2191 5.26 157.75 1919.32
Booted, HD idle, 800x600, mixed colors 0.46 A101.2 W0.2024 4.86 145.73 1773.02
Booted, HD idle, textmode 0.41 A90.2 W0.1804 4.33 129.89 1580.30
Booted, HD idle, 800x600, monitor turned off 0.248 A54.56 W0.1091 2.62 78.55 955.72
Booted, HD idle, textmode, monitor turned off 0.241 A53.02 W0.1060 2.54 76.32 928.56

Pentium 200MHz desktop 64MB RAM

Tested without monitor connected to the computer.
OS: Linux-2.2.14
TestAmpereWattPrice/hourPrice/dayPrice/30 daysPrice/year
Power off (soft switch) 0.046 A10.12 W0.0202 0.48 14.54 176.95
Booting, HD active, text mode 0.301 A66.22 W0.1324 3.18 95.33 1159.82
Booted, HD idle, text mode 0.317 A69.74 W0.1395 3.35 100.44 1222.02

KFC monitor, 15" CRT

TestAmpereWattPrice/hourPrice/dayPrice/30 daysPrice/year
Power save mode, standby 0.021 A4.62 W0.0092 0.22 6.62 80.59
Booting, text mode, mostly black colors 0.193 A42.46 W0.0849 2.04 61.13 743.72
Booted, white colors 0.265 A58.3 W0.1166 2.80 83.95 1021.42

IBM 6547-01N monitor, 17" CRT

TestAmpereWattPrice/hourPrice/dayPrice/30 daysPrice/year
Power save mode, standby 0.055 A12.1 W0.0242 0.58 17.42 211.99
Booting, text mode, mostly black colors 0.208 A45.76 W0.0915 2.20 65.88 801.54
Booted, black colors 0.232 A51.04 W0.1021 2.45 73.51 894.40
Booted, white colors 0.32 A70.4 W0.1408 3.38 101.38 1233.41