The topic speaks for itself. How do we find out how much power in watts our pc is drawing? i remember reading of a device that existed. maybe there are many devices out there. Any recommendations or ideas? i need one to know for sure what power supply to put on each computer i'm building. i don't wanna put a 500w PSU on a system only drawing 250. Any ideas? and also i plan to use it for energy savings and future reference. so accuracy is a must. thanks guys for any input.