HP announced an 8-socket (32-cores) AMD server as you can read on heise online. Another very interesting platform is the Tyan Transport GT28, which is a 1U (!) server with two dual-socket mainboard, i.e. up to 16-cores (using AMD quad core processors) in 1U. 32 memory slots make room for a lot of memory and 8 gigabit ethernet ports and optional Infiniband provide enough network bandwidth. The interesting thing is that it’s two computers in one, so you can run two completely independent operating systems on it (without the need of a hypervisor like Xen). And the price is lower, because AMD processors that can be used in a 4-socket setting are more expensive than two-socket ones. Perfect solution, especially as the bare-bone is only around $1900.