Samsung's BM9K1 PCIe drive's controller is based on RISC-V delivering 11.4 GB/s

“The company said the RISC-V design enables more granular firmware optimization for QLC NAND management and AI-specific I/O patterns, resulting in a 23% improvement in energy efficiency over the BM9C1.”

A 23 percent power reduction is pretty nice. These kinds of custom instructions are why RISC-V is going to continue killing it in microcontrollers.