Samsung Exynos chipsets have been having somewhat of a rough time lately. First the Exynos 5 Octa 5410 couldn't deliver the Snapdragon-smashing performance everyone was expecting from it, while the refreshed 5420 version is yet to hit the shelves in the Galaxy Note III, but it has already been confirmed to come at the expense of 4K video recording. Another issue of the chipset with eight CPU...
Source: http://www.gsmarena.com/samsung_exynos_chipset_to_undergo_another_evolution-news-6743.php
