[lkillen]

A second core would allow you to get more bang for less battery. Look at the Centrino as compared to the Pentium4. You can clock down when you have a second core running true threads. Before multi-cores, all they could do was throw the clock at you. Another advancement would be expanded Word width. Thing of it as the width of your information highway. 8bit is 8 lanes whereas 32bit is so much more efficient if the coders make use of it.