Note that the shipping RISC-V SoC currently most suited to datacentres, the SG2042, is more powerful than the first Graviton deployed to AWS in November 2018 (five years ago) -- the C910 cores in the SG2042 are similar to the Arm A72 cores in the Graviton, but the SG2042 has 64 of them vs 16 in the Graviton.
Multiple companies have M1-class RISC-V in the pipeline.
Multiple companies have M1-class RISC-V in the pipeline.