Interesting article on GigaOm this morning about Facebook benchmarking a 64-core chip from Tilera.
The X86 processor architecture has been in a dominant for so many years, not based upon any inherent sophistication, but more based upon chance and circumstance (see this vid for more details around the 48min mark), so it does feel about time for a new advancement in hardware architecture.
Be interesting to watch this space and see what develops..