Every Nvidia GPU has 10 to 30 RISC-V cores inside it (xda-developers.com)

That's really the best use for RISCV, small embedded microcontrollers handling mundane tasks. I think it's cool people are trying to turn it into a desktop and server platform but it really stands out as being a much cheaper Cortex-M or Cortex-R replacement.

Neat. I’ve been watching a lot of Nvidia board level repair videos; the technician would occasionally probe the SPI signal lines to the flash chip containing “VBIOS” code to see if the GPU shows signs of life. Given no external microcontrollers on the board, I’ve always wondered what is the type of core that runs mundane tasks like executing the boot ROM, controlling PWM output for the fans, setting RGB LED colors etc. My guess was on Cortex-M, but I guess I might be wrong.

This news is like a year old. I think they revealed it at the 2025 RISC-V summit in America.