Wouldn't it be awesome, if the Raspberry Pi foundation, who brought computing to the home, would also be able to engineer a supercomputer for the home?
I mean, a motherboard about the size of a regular PC ATX case, but loaded with affordable lower power CPUs (like ARM) and affordable RAM?
Personally I would love to one day own a 128 core Raspberry Pi supercomputer, compatible with perhaps 8 sticks of DDR3, to run bitcoin mining, Folding at home, or other programs on Linux, that can make use of tens to hundreds of CPUs.
Also, servers usually use ECC memory, that's expensive.
They would work ok with much cheaper DDR3 memory as well, however, chances on errors might increase.
In cases of Folding at home, or bitcoin mining, it doesn't matter as much.
Rather than run programs from power hungry GPUs, perhaps it's better to run them from more cores at lower powerdraws.