Energy efficient PC... (Score 1)

Seriously go with the new core 2 duo. It uses way less power than it's predicessor the P4. You can probably get away with about 200 watts less on your PSU. That adds up believe me. Seriously, don't use Vista because it's just a lackluster excuse for something new. It will hopefully go the same route as Melinium Edition and dissapear. Other than that, go nutz man. Build ya some uber-micro!