Chinese Academy of Sciences releases "Xiangshan", a high performance open source RISC-V processor that runs Linux

The performance (as measured under SEPC2006) is about 7/Ghz.

For comparison Sifive announced P550 which reportedly has the SEPC2006 score of 8.65/Ghz (and is their highest performing chip).

github .

I think this is the highest performing open source RISC-V processor i ever came across.