Lol sounds like someone is jealous. This is a great way to utilize PCs that are otherwise wasting power doing nothing.
Current is delivered upon demand. a 450W PSU doesn't always draw 450W. That's just the max it can deliver under load. 80 workstations running full-tilt for a sustained amount of time will add a noticeable increase on next month's power bill. If you're the one ultimately in control of those 80 machines, all fingers point to you.
I'll still have a job on Monday. You jelly?
sure I'll have one. Theres about 3 dozen of Sun Sunfire UltraSPARC stations in the basement, Network switching equipment for 30 GBit/s internet access, and a GSM Cellular Network Broadcasting cell on the roof. I mean, with the Sunfires alone, we're talking about an average load of 1500W/Machine. Also the machines I'm using are intended to do real computing during daytime, so it's not really a problem to use them at nights - actually my boss does know this and is cool with it. Power is not an issue here :-D