I have thought about building enclosures like that for cooling..... for crunching, not mining. Would be great in the winter however the warm months here would really be rough as the outside air temps are too high and the gpu's would cook. Plus my electrical bills would skyrocket :\ but who knows. Always looking for more crunching power but the one has to deal with the real world too. lol And in my real world I've got my hotrods (cars) that get pretty pricey in their own right. :-) AND not to forget that there is a wife involved too that has an input on financial expenditures!! But at any rate I enjoyed watching the utube video... there is some serious money involved there.