network rendering is not an option for a realtime application (at least if we try to keep it payable).
the penryns are said to be twise as fast as the latest XEONs, though one had always to add for which task exactly, but this means we are getting a good step further. without wanting to say too much: offline rendering won't take days ;-)
christian
and remember: only a CRAY can run an endless loop in just three seconds.