None of these have over 350W PSU's, and I don't think any of these rigs will draw anywhere close to that power. All I have is anecdotal evidence that my electri

None of these have over 350W PSU's, and I don't think any of these rigs will draw anywhere close to that power. All I have is anecdotal evidence that my electric bill has increased by maybe $14-$20 a year. Running my stereo for a day probably eats more power than these things take all year. Plus, my livingroom in my apartment stays nice and warm during the midwest winters. I'm pretty happy with spaceheaters with processing power :) edit: the real issue is that I can't get a cable connection in my neighborhood with higher than .7mbit up, so it's not like I 'm serving loads of content. I use these for running different tasks usually. Two are dedicated DB servers and the other 3 run whatever projects I'm consulting on this/ that week.