Shakti C Class Processor
We have successfully taped out a 22nm chip using this design which boots RISC-V Linux. It consumes 90-110 mW power on 22nm and requires about 175k gates for realization. The same core has also been manufactured as a Test-chip on the 180nm from SCL. Find more details here.
This implementation has also been targeted on FPGA's and it consumes about 20K LUT's on a 7-series Xilinx FPGA and reports DMIPS/MHz of 1.68