bigben: it seems you're uninformed. Several high quality + high power fanless PSU's exist out there.
1st there are the ones you can find in HW labs. Those are the hugely expensive and bulky ones, and we dont need the power of those (count it in KW). Needless to say, no fan in those.
2nd there are some ppl selling ATX 300+ W psu's which are fanless and *totally* closed (that means need NO airflow). I found one last week for $185. The form factor needs some case modding but thats nothing if your case is well designed (or if like me you've got a cube).
3rd MOSFETs dont produce any heat or very little if the PSU is designed accordingly (which is more expensive though). Guess what those fanless PSU's are designed that way.
Usual ATX PSU's produce lots of heat because they are *switched*. There's another thread on this forum where i explain thouroughly the differences with other PSUs.
4th I have several Ultra160 drives. All heat up to 70°C and more if left alone in a closed case.
5th Fan cooling is active cooling. Convection / heatsink cooling is passive cooling.
DigitalChaos:
Doesnt hurt to 'extend' the mosfets connections so they can be layed down on a WB. Other ppl (including the famous BladeRunner) did it with full success.
Just make sure you're good at soldering and use good quality / good diameter wire.
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