You may have noticed a trend recently -- pairing slightly less powerful cores that sip power, with more robust ones that can chug through demanding applications. NVIDIA's Tegra 3 will be packing an underclocked fifth core, while ARM's big.LITTLE initiative matches a highly efficient 28nm A7 with the beefy A15. Now Freescale is planning to use the same trick, but you won't find its asymmetrical CPUs in your next tab