The Star64 is a single-board computer with a quad-core RISC-V processor, support for up to 8GB of RAM and up to 128GB of storage (as well as a microSD card reader). Developed by the folks at Pine64, ...
8051 8-bit MCU @ 25 to 300 MHz with 8K SRAM The way the Sophgo SG2000 chip works, you can select to use either the 1 GHz RISC-V core or the 1 GHz ARM core, but you cannot use both at the same time.