Has anyone wondered how much your computer uses?

I want to know how much power is needed to power this machine per hour(In Watts):


-Pentium 4 2.66GHz System Bus 533MHz, 512-KB L2-Cache, PGA-478 pins
-Gigabyte GA-8PE800 P4 Intel i845PE ChipSet ATX-MainBoard with 478pin PGA Processor Socket and 3 DDR-RAM slots Built in 6 channel Audio and USB 2.0
-Kingston 256MB PC333 (PC2700) DDR RAM module
-nVidia GeForce4 MX440SE Advance 3D AGP VGA w/128MB-DDR, with TV Out
-Seagate ST340014A Baracuda 7200.7 40GB 7200rpm IDE Harddisk Drive
-TDK Cyclone 48X24X48 Internal IDE Re-Writable Drive Kit
-1.44MB 3.5' Floppy Disk Drive
-Samsung SyncMaster 753DFX 17" Colour Monitor
-A4 Tech KBS-1527RP RF Wireless Multimedia KeyBoard+Optical 3D Mouse with PS/2 Connections

Thanks.

Read this article and this thread for starters.

also these might help:
http://www.sslug.dk/~chlor/power.php
http://computer.howstuffworks.com/power-supply3.htm
http://www.pcguide.com/ref/hdd/perf/perf/spec/otherPower-c.html

Hmm.. I don't understand 550MHz use 30W and 733MHz use 23.5W and 600MHz use 45W. Maybe you like to explain?

different CPUs consume different amounts of power. According to what core it uses and the amount of voltage required, as well as the size of the die.

*thats the short explanation

So in your expertise, how much power does my whole computer uses?

Voltage can be thought of as electrical pressure, such as the pressure that exists in a water pipe. The higher the voltage, the higher the current flow will be through a given resistance. Hope that helps. www.3dauto.com