I discovered the benefits of low power CPUs and GPUs for HTPCs quite a few years ago. AMD released some 45w CPUs and ATI made some low power GPUs optimized for video. I quickly replaced the power hungry Intel P4s that were creating too much noise and heat. Hydro bills also improved as operating power under load dropped from about 150w to 75w. (That's a much bigger saving than eliminating the 1w to 3w PCs consume on standby.) Intel countered with their Core 2 line and now has the edge, of course. HTPCs and media players using ARM and Intel mobile chips can cut power consumption to the 15w to 25w range.