I don't understand why we need more computing power than we already have.
Just write better software and the computers will speed up by a factor of 3 or 4 and I don't need any more power than I have now.
For complicated science calculations that can last days on end, or maybe better servers that can handle many more clients at once, games, games, games, HD video eats harddrive space like a skinny guy on a buffet (They can EAT!!).
Because computing power is a lot like knowledge, we will never have enough or satisfy the demand for it. These new chip architectures will allow new forms of computing devices as well as a host of new applications. Defense, aerospace, medicine, communications, consumer electronics, etc....
If you can create the processing power then someone will create the application needed to run on it.
Someone on FR recently quoted Prof. Niklaus Wirth (inventor of Pascal, Modula 2 and Oberon) as saying, "Software is getting slower faster than hardware is getting faster."