Thanks to the exploding world of mobile, the computer industry has seen a refreshed interest in high efficiency components. Though Intel has always made a wide range of processors, until lately the company’s low-power products were sometimes seen as second-class citizens of the CPU world. Sure, they used less power, but this was often achieve this with lower clock speeds, fewer features, and sometimes the disabling of cores in the case of multi-core processors. With the Ultrabook initiative Intel has renewed emphasis on efficient processors that are not just on equal footing as the rest of their offerings, but rather showcase the extent of Intel’s processor prowess. The latest Ivy Bridge Core U-series processors found in Ultrabooks are more than just low-power — they are highly efficient processors capable of a high dynamic range of computing tasks. By packing the latest and greatest processor technology into a package that also has practical limits on how much power it can draw and how much heat it can produce, these CPUs present an alternative to using a standard CPU and simply slapping in a big battery; But which is better?