>So the Lichee RV is about 4000 times slower than the Radeon RX 6600 XT and about 1200 times slower than the Ryzen 5 4700U. But it works

Coremark-wise, it is comparable to a Pentium III 1GHz. It doesn't help that it is also a single core.

The recently announced visionfive2 is in another dimension (faster than A55, 4 core, 2x GbE, 8GB RAM, M.2 interface, <$100).