Yep, look at RISC-V, the most promising hardware is from the USA. It is not yet on the latest silicon process, but with the latest GPU, I guess we could run the latest games, until the game devs recompile and QA a bit their games (obviously on elf/linux)
Most promising by what definition? And what subset of applications/markets are you considering?
In the microcontroller space, China is leading on RISC-V. EspressIf, WCH, et.c are already shipping units at scale. Of course these are low value chips, but the volumes are large. The combined shipments for microcontrollers are in tens of billions of units annually. The technology choices in the space changes slowly (32 bit over 8/16bit is quite recent...), but over the next 10 years RISC-V looks poised to take a decent chunk.
