This is a Barcelona server that we had a chance to play with. It is one of the few samples available and at press time the server worked at 1.6 GHz just like the rest of Barcelona K10 samples around.
It is a single socket K10 server but we've seen Dual socket machine and some four socket machines as well.
The server needs Nvidia Professional 3600 chipset to work and it can support up to 32 GB of registered DDR2 memory, as it has 8 memory sockets.
Enough said, here is how the rack looks like.