My main HTPC uses around 130 watts at idle, 7 watts in standby (S3), and 4 in hibernate (S4) so the case for having it take a nap whenever it can is quite clear. There was a time when getting S3 standby working properly was a black art involving careful motherboard and device selection, registry hacks, and some pixie dust. When Vista came out and even low-end motherboards included full standby support all of that changed; setting up your PC to properly take a nap, and wake up when you need it, is something anyone with a few minutes can do.

http://www.missingremote.com/index.p...6&Ite mid=232