Increased clock and mobile devices is from a practical standpoint, counter-intuitive. Battery technology has not caught up. A good example is snapdragon and the 3430. 3430 is a more balanced chipset where as most of the weight of power with snap is the cpu. Snapdragons are 1ghz, but highest clocked is 750mhz and still a battery hog.

We need to see lower nm fabrication of chips to help correlate power consumption curves with battery technogy that is available.