1 CPU = 66 cores at 1,6 GHz. 2.5 Tb/s on-chip bandwidth. Over 250 billion interactions/s per CPU.
Big emphasis on interchip communication was an eye-opening for me. Obvious, of course.

Some info regarding relevant strengths of F@H and Anton: here and here.
Edit: Couple of links about Intel's Xeon Phi - similar number of cores at nearly the same speed, but general purpose: details and specs. Next year's Knights Landing.