Review on SmartFly Info Rock Pi 4B RK3399: Comprehensive Single Board Computer Kit with LPDDR4 4GB, Dualband 2, 4/5GHz WLAN/Bluetooth 5.0 by Damien Krzywicki

The board is certainly powerful, but cooling can be an issue - the processor faces down and the included heatsink just doesn't cut the mustard under load, making it a little impractical for the typical Cases. Many Linux distributions were also not loaded correctly on the manufacturer's website when they were purchased. This is definitely a development board that needs some extra "tweaking" to be popular.