Not to mention Tilera, who makes 36-core chips/cards [1], with 4 in a 1U box [2], with each processor with connected to each its four neighbors by a 250 Gb/s link.
But Tilera uses its own architecture, ARM on the other hand is nearly everywhere.
There were other companies like Tilera: Transputer, Connection Machine.......SiCortex was founded in 2003 with a similar idea and was shutting down by 2009
The problems with these architectures is cost: mass market tech like x86 and ARM offers more bang for your buck
Yeah, I see they have the same sort of "talk to us for pricing and more info".
Important things to note is that each of the nodes in this Slab have their own local SATA solid-state storage, and the individual CPUs are quicker. The Boston thing has higher density though.
[1] http://tilera.com/products/processors/TILE-Gx_Family [2] http://tilera.com/products/platforms [3] http://www.tilera.com/technology