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.
[1] http://tilera.com/products/processors/TILE-Gx_Family [2] http://tilera.com/products/platforms [3] http://www.tilera.com/technology