Down for me right now but usually https://linux-sunxi.org/A733 has ok details. Where-as collabora maintains this incredible support matrix, which generally indicates a modern want for nothing for Rockchip. https://gitlab.collabora.com/hardware-enablement/rockchip-35...

I still bought two allwinner a733 boards, on an AliExpress sale. I went with the Radxa Cubie A7z, as Radxa isn't perfect either, but much better ecosystem participants than OrangePi. https://linuxgizmos.com/radxa-debuts-raspberry-pi-zero-alter...