The rendercows talk over the TCP/IP protocols. There is no compatibility issues regarding hardware between machines; if it certified as network capable, it has to meet certain standards. About the only difference will be the time per frame each system has. As for Vue 6..... The only ones who know are e-on and the beta testers, who are under an NDA. It is probably a safe bet that there has been some technology changes, if for no other reason than they have ILM's feedback, although the community has been fielding a pretty consistent list of 'wannas' for some time. We shall see....