Axisflying Argus F7 Pro + 55A Mini combines a flight controller with an F7 processor and powerful 55A ESCs. The stack has mounting holes 20x20mm and is thus particularly suitable for racing or freestyle 5" drones powered by 4-6S Lipo batteries.
The flight controller uses an STM32F722 processor combined with an ICM42688P gyro. It also has 16MB memory for Blackbox and a barometer for altitude measurement. There are 5 UARTs and I2C pads for connecting other components.