I used to, as I was running about half a dozen servers on it. I ended up buying dedicated hardware for that (low power), so my desktop goes to sleep after 30 minutes. I just send a magic packet (WoL) if I need to access it remotely. Win/win. It's surprising just how energy efficient things are these days. We, a family of 5, only pay 20 a week (on average, we pay monthly) for gas and electricity combined. The smart meter shows that with all my servers, edge router, firewall, PC and laptop, fish tanks and external filters, TV etc running we're consuming between 3p and 4p an hour. Amazing really.