Originally Posted by WeasteDevil

Have you had a look at the work Naughty Dog did for Uncharted? It's quite interesting, and I think they used a single SPU for the system in that game. Uncharted can be done on the XB360 without any problems IMO, so I'm not talking it up to be something out of this world, just a decent starting point. It's impressive in the sense that it has been done from a developer starting from scratch - from the entire engine up, as under the PS2, all Naughty Dog code was done in their own proprietary LISP based engine which they threw in the bin.