How much power does a pc use

[Tdh1987]

I want to know how much power a pc uses (in watts), not the monitor, just what the psu draws (roughly)

Sort of spec like this:

Athlon/Penium 4 2400
512mb ram
Geforce 4 ti
7200 rpm hard drive
2 cdroms
couple of fans
etc

Thanks

[sm8000]

Usually, each component can be looked up on the manufacturer's website, and documentation there will tell you typical wattage use. This includes power supply units themselves.