BAP,
they create a folding farm that may have a bunch of motherboards hooked up together on a table or on a cart. I saw one with 31 motherboards hooked up.
No computer cases involved. Bare bones crunching numbers with video cards and processors linked together.
It is amazing.
https://www.google.com/search?q=folding+farm&newwindow=1&biw=1440&bih=799&tbm=isch&imgil=ekMGFMJ-PgaBLM%253A%253B0pH5ucSlFwn5hM%253Bhttp%25253A%25252F%25252Fwww.overclock.net%25252Ft%25252F677300%25252Fthe-beginning-of-my-ocn-folding-farm&source=iu&pf=m&fir=ekMGFMJ-PgaBLM%253A%252C0pH5ucSlFwn5hM%252C_&usg=__7uw0pnQtWaYjreydX44wWA42ZOk%3D&ved=0CCcQyjc&ei=biFKVdOlJvDbsATej4HoDA#imgrc=ekMGFMJ-PgaBLM%253A%3B0pH5ucSlFwn5hM%3Bhttp%253A%252F%252Fassets.overclock.net.s3.amazonaws.com%252F8%252F8a%252F8a5a70f7_vbattach143443.jpeg%3Bhttp%253A%252F%252Fwww.overclock.net%252Ft%252F677300%252Fthe-beginning-of-my-ocn-folding-farm%3B1184%3B888
micro....