i'd be kinda careful around those coil things tho. this sounds like some sort of cooling on the power control devices is a very good idea.
i haven't played with the ones on the motherboard, but i've seen similar devices on other power supplies. i was repairing a lappy psu one time, and had plugged it in to test the output. well, the thing was out of its case, and i got my finger on the coil.
i got _quite_ a shock out of that... so i'm sure a lot of power is running through those, and possibly touching copper and the like to those things could be rather dangerous. i noticed he does not have them touching in the article, and points that out. probably for good reason. i don't think i'd mess with actually cooling those.. sounds like he got good results without.
on an idea for cooling the backside of the mainboard tho, here's an idea. see what you think of it.
on the back of the radeon 9700 cards, there's a small aluminum plate. it's actually used to cool something back there (i believe it's the card's own voltage regulator).
what if you made a much larger plate, and made contact patches (preferrably aluminum or copper to match) for the back of the mosfets, and had a large, relatively thin plate cut out on the back of the motherboard? it would be thin enought to fit without modifying the case, and perhaps you could even insulate if from the mainboard with a thin layer of neoprene or something.
this way you could make it fairly large... possibly even the size of the board, and it might be large enough to dissipate a good amount of heat. the only thing i'd be concerned with there is the insulation on the back would probably have the potential to cause other things to heat up as well. maybe making a large enough plate, or some sort of modifications, you could connect it to any other devices that get hot on the back as well.
dunno if it would work, just brainstorming. i figure the less you have to cut up the case, the better.
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