I've been thinking that a PSU shpould come with a Li-ion battery that it charges up for the first few mins, then shuts itself down before it gets too hot and then back on when the cell is almost drained, having had time to cool down again.
Charging batteries is far from efficient, and would create much larger amounts of heat in the PSU than the normal setup - not sure on exact figures but around 10% efficient?
Not sure if this'd help cooling since it'd have to be at higher load to start with, but it could at least charge silently while the PC is turned off and act as a mini UPS.
Hmmm, what happens when you want to use it continuously? The inefficiency of batteries would mean your PSU would be powered continuously at a higher power than without using batteries.
The battery could also provide power for HDDs to flush their cache after shutdown.
Wasnt aware this was a problem?? Surely it only takes a few seconds?