Frankly, I'm surprised we're still using nasty bulky power supplies.
I have one of these running my full size ATX nforce2 motherboard. It takes a single 12V line in and generates all the different voltages needed by a motherboard. Why arn't these just built onto a motherboard? Your average PC power supply could be a lot smaller and more efficient if all it had to deliver was 12V and 5V. Plus you could do what I'm doing, and run a PC directly from a solar panel charged battery. I wish I could do the same with my monitor!
DOWN WITH ATX POWER SUPPLY CONNECTORS! :D