Yea, that's true, but even so, the powerful ATX PSU still consume nearly the same power as room heater (6 to 12 Amps, depending on the wattage of DC rails), and I decided to set Cool 'n' Quiet so that way it can go from 10 Amps on 12V CPU plug to 3 Amps when idling. It's not so much when surfing...