Nowdays, wearables are very important part of Internet of Things (IoT) concept. They share a lot of parameters with embedded devices and add some new requirements. Most of those requirements are created by their unique usage-these devices are in user proximity, mostly directly on a human body. This brings also a lot of complications for researchers and engineers. They must consider i.e. safety terms or small dimensions, which are interfering with requirements such as battery life and computational power. This paper presents a study of computational power versus power efficiency of modern System on a Chip (SoC) platform for Internet of Things (IoT). Target of this study is to determine which currently accessible SoC on the market is most suitable for usage in wearables and emerging applications like e.g. augmented reality. Three different platforms were tested and the results are presented at the end of this paper. © 2016 IEEE.