Just upgraded the machine that runs my home web server to a second hand Compaq Proliant 460 with dual RAID array drives. But it's noisy as hell and a real power hog. The old machine was a no-name P3 box that used less than a third of that.
Looks like it may suck up as much power as I save on the solar water heater!
Doh! This is a classic problem that has been warned about concerning energy efficiency - people tend to use up any savings they make "to improve their lifestyle". I'm just as guilty.