yeah, util bills are something i don't tend to think about, but, as you mention it, i suppose a lower bill would be better it may seem obvious and a router is usually physically smaller than a PC, although, physical size doesn't always determine the power requirements of something, but in this case it is actually true[ot]i tried searching wiki & google for typical power requirements of a home router & a PC, but, i didn't find anything[/ot]Edit: but i think generally the difference is probably: a home router uses mW a PC uses W