Anyone out there running an ATX board from a 1U PSU? I'm designing a new custom machine, and space restrictions rule out a full size ATX PSU. My calculations have a P4 ATX board with 512MB RAM consuming an average of 250W, so I'd need a 300W unit. I'd use an addtional 1U PSU for the HD, CD, fans and such. Anyone done this or got an opinion?