I just picked up an HP thin client on eBay -- it's a 1GHz AMD machine with XP2 installed. I probably should have asked this question before I bought it, but I'm hoping I'll be able to replace a less-than-completely-reliable older laptop I have on my home network. The always-on laptop runs my FTP server and VNC server and, eventually, will have a MagicJack connected to it to give me always-on VOIP on a super-cheap budget. I'm assuming I'll be able to do the same with the HP thin client, with the programs I'll need installed on my NAS. The HP thin client draws about 20 watts in a typical configuration, whereas the laptop consume about 90 watts.

Have I gotten this right, or did I just blow $150 on something I really don't need?