Watts per hour really isn't a very useful(or logical) measurement. For the sake of simplicity, let's suppose that your computer's current draw is constant. Again, for simplicity's sake, suppose it draws 200 watts from the wall. It is drawing 200 watts every second it is on. It isn't using 200 watts per second or per hour or whatever. Your computer drew a constant 200 watts for the hour it was on, but it didn't draw 200 watts per hour. Perhaps you are looking for watthours rather than watts/hour? If you could explain a bit more about what you are trying to accomplish then we could explain a bit better about how to find it.
Thanks, I am trying to determine how many kilowatts/hr my computer generates on standard use to calculate the impact it is having on my electric bill. (it is highly overclocked)....
Thanks. Got mine for $30 dollars shipped. Now I can figure out what is causing my electricity bill to be so high and if my computer is a major factor on it or not.