There's a few RISC-V single-chip computers that put the Raspberry-Pi's products to shame. I'm evaluating the Bouffalo Labs BL808 and the Sophgo SG2000 for an upcoming project. They have MMUs and enough integrated RAM to run a mainline POSIX operating system. Both have multiple asymmetric cores that allow one to run a full Linux OS, one to run an RTOS or bare metal, and one for low-power tasks to run while suspended.
They're basically as capable as a Pi Zero, but work in a Pi Pico form factor. Check out the Ox64 and Oz64 boards from Pine64 or the Duo series from Milk-V.
They're basically as capable as a Pi Zero, but work in a Pi Pico form factor. Check out the Ox64 and Oz64 boards from Pine64 or the Duo series from Milk-V.