The Samsung Galaxy S7 can have either an Exynos or a Snapdragon chipset... or MediaTek Helio X20 or X25, wait what? Geekbench scores list a Samsung SM-G930W8, which comes with with one of three different chipsets. Now, G930 is the Galaxy S7 and W is typically the designation for Canadian versions. Scrolling through the results, you see octa-core processors - the Exynos - or deca-cores - either MT6797 or MT6797T. Those are better known as MediaTek Helio X20 and X25. So much for the exclusivity of the X25. Both chipsets are mostly the same, but the X25 is an overclocked version and it...
Source: http://www.gsmarena.com/galaxy_s7_with_helio_x20_and_x25_chipsets_spotted_in_benchmark-news-17476.php