They're not exactly "super-branded" racks of "PC"s the way we tend to think about them, a bunch of white/beige boxes. They are server-grade computers, with all

They're not exactly "super-branded" racks of "PC"s the way we tend to think about them, a bunch of white/beige boxes. They are server-grade computers, with all that comes there (special interconnect features, ECC memory and all that), but there is indeed no question as to their distributed nature. This is probably a technological response to the rapid pace of development. It's more efficient this way, instead of developing custom chips and boards for two years and deploying them when the high pace of advance makes them half-obsolete.