I've been thinking it would be a good idea to put the power supply outside the system. Seems that the benefits would be:
- isolation: no vibration from fans to be amplified in case
- better cooling: more space in case, better airflow, lower temps
- easier to cool, mod: seems that you could do more tricks to cool the power supply if it were external, like a big 120 mm fan or something else creative.
The way my desk is set up I'd have room for a big external power supply, so it wouldn't be a problem.
The biggest potential drawback that I can think of (save for actually finding or building one) is the distance. I'm by no means an electrical engineer. But, I wonder if there'd be a problem running the DC current an extra few feet, say 5 or 6?
Also, I did a search of the forums here. Was able to find one single entry thread titled External Power Supply
. It linked to a page that showed a picture of one at some Asian trade show.
So, is an external power supply a worthwhile idea?
believe or not, PSU fan moves lot of air in your computer case. without PSU, you need some exhaust fan anyway unless you intend to keep the case open (assuming you're going for fanless system).
i don't think vibrational noise from PSU is any significant. psu fan noise is by far the greatest obstacle. but you won't be circumventing this.. because you'll have to install an exhaust fan anyway to keep things moving.
if you put psu outside of case, there'll be absolutely no need to go overkill on the cooling (i.e. 120mm fan). stock one running at 7v should be fine because there will be no additional heat from the rest of the computer. this is of course, you want the 'extreme' cooling... but if that's the case, you're in a wrong forum
have fun! keep the ideas coming...