It's basically a continuation of VIA's x86 tech (they sold the cyrix processors for a while if anyone remembers them). I assumed it was just copyright theft, but these are legitimately licensed x86 chips.
Apparently the current generation of these is like the Ryzen 3000 series, but I can't find any actual benchmarks, so I'll take that with a bit of salt. I doubt they will have the same power efficiency as the OP ones since the clock is apparently at 3.7GHz.
This is much cooler than I initially realised though. A viable 3rd player can keep competitor prices down so we would all benefit even if most of us aren't buying these chips
The cyrix line of cpu was always far behind intel and amd. They ran super hot too. One time we wanted to see how much we could overclock one and it burned itself through the motherboard!
Offtopic, but I've seen an arcade monitor where a component (resistor, most likely) had burned a hole through the PCB and was gone... and the monitor was still operational!
the current generation of these is like the Ryzen 3000 series
They are not like Ryzens, they are actual Ryzens made in collaboration with AMD. They have a few differences but its pretty much the same chip, same performance. I think they are still making these chips.
IIRC they still update their old VIA-based chips in parallel for embedded applications or something. Don't quote me on this one, it has been a while.