We used SeaSonic's Power Angel Power Meter to measure the amount of power our test system pulled from the wall. You'll find three figures below: power supply's maximum rated wattage, peak power consumption under a full CPU/GPU load, and how much the system pulled from the wall when idle, following a fresh system boot.
Without a dedicated graphics card, multiple hard drives, a heaping pile of RAM, or a quad-core CPU, there isn't much here to tax the power supply, which is only 150W to begin with. Even still, there was plenty of headroom to spare under load. Fully loaded with Prime95 and Furmark, the ET2410 only pulled 91W from the wall. When idle, it consumed less than half of that, drawing 42W from the outlet.