Calculating PC Power Consumption

[Justvicks]

I've seen that there are many wonder about how many watts is the power you need or how many watts your PC consumes. There are many websites which helps the calculation.
Here you have one of them:
http://www.extreme.outervision.com/psucalculator.jsp

[ApPy10]

For additional questions, if you install a new component and does not give you as to whether the power supply, the computer shuts down, it melts the source or could affect other components?

[T.J.]

Usually what happens is simply that some component fails and crashes can occur.

[Team Leader]

And although it does not come to the event, here you have a flow designer: http://www.extreme.outervision.com/flowdesigner.jsp
Here is a overclocked calculator, another one for temperature:
http://www.extreme.outervision.com/tools.jsp

[Techguru01]

Oh, here you go

http://www.jscustompcs.com/power_supply/