I wanted to put some light on the fact that you now can run some x86 Windows and Linux programs and games on the RK3399 with Box86.
I have a topic about it in my lonely "Gaming on ARM club"
I've made a preview video about it last week.
I've done some further tests. It is just amazing. Plays way better than the RPi4. Tho not yet as many things work.
@Salvador Liébana made prebuild images with Box86 preinstalled, and with many other emulators.
You can download it here