It's been a while since our last updates, actually it's 3 years ago! A lot of things happened at Radxa and today we are really happy to introduce our latest Single Board Computer, ROCK Pi 4. ROCK Pi 4 series are Rockchip RK3399 based boards in Raspberry Pi/Tinker board form factor. It offers "class-leading performance while leveraging outstanding mechanical compatibility". We know that there are some SBCs based on RK3399 on the market already, but why another one? In this post, we will explain why we made ROCK Pi, the ideas behind ROCK Pi and what we are thinking of Single Board Computers .