while watching the WAN show, Linus talked about a pcb wall. thinking about that the next day an idea came to me, why not make a working pcb wall? ie, a cluster system. so i went on amazon and did some looking, found a cheapo LGA 1155 microATX Motherboard, dual core, 1u power supply, ram, and hard drive, all totaled to $169.55 per node. it was just a quick look so im sure you could find cheaper.
But there would be issues with it.
1: If you have different Motherboards then you couldn't ghost the drives, meaning you would have to setup each system by hand.
2: Networking would be a nightmare.
3: Power issues.
4: Power buttons? and so on. . . .
then again you would have some great wall art, and a supercomputer.