Maybe there could be some use if the external brick could be standard, so you'd only have to carry the actual computer. But I personally would much prefer havi

Maybe there could be some use if the external brick could be standard, so you'd only have to carry the actual computer. But I personally would much prefer having to lug around a marginally bigger box instead of two smaller ones. Fewer cables to trip over, etc. Also, if the case is a bit bigger, it will probably be able to house a bigger cooler, so it should be quieter, if I'm looking for a powerful computer. If I'm OK with a regular middle of the road setup, there already are plenty of options from OEMs. I'm thinking HP Desktop Minis. Dell, Lenovo and Fujitsu also have similar offerings, though I'm not familiar with them. They can be a bit noisy under load, though.