Qualcomm is moving back to custom CPU cores — called Kyro — in the Snapdragon 820, with a new report out of South Korea stating that the 64-bit cores will be clocked at 3.0GHz.
Samsung is said to manufacture the SoC, which Qualcomm revealed during the unveil of the Snapdragon 820 would be built on a “leading-edge FinFET process.” Samsung switched to a 14nm FinFET manufacturing process this year with the latest-generation Exynos SoC, which is used in the Galaxy S6 and Galaxy S6 edge.
Source: iMore