"BT: How do you expect the PSU to evolve in the next three to five years considering the push to greener, more efficient computing? (Personally we believe PSUs will become more of a commodity product so in the future there will be an emphasis on price and features rather than component quality).
DD: I expect a major change. There will be only one DC output: +12 Volts. The +3.3V, +5V, and -12V outputs will be eliminated in the future. This will make the PSU more efficient, since +12 Volts is the most efficient output, and of course it will make the PSU simpler and less expensive.
Some of the cost savings will be used to improve component quality since the cost of upgrading is minimal compared to the cost of returning a defective PSU and the cost of computer downtime."