Rockchip made the OP1 the world’s most optimized Chromebook processor. OP1, also known as RK3399-C, Hexacore dual ARM Cortex-A72, quad ARM Cortex-A53 with Mali-T860MP4 GPU. Rockchip is the only chip maker which has been optimizing processors for Chromebooks over the past 3 years, with all the lessons they learned with the RK3288 quad-core ARM Cortex-A17 which shipped in several Chromebooks in 2015, they were able to improve on that, optimize every detail and in collaboration with Google and Samsung.