Some background on the performance claims from The Register :
Alibaba claims the machine’s single-core general-purpose performance “exceeded 70 points in the SPECint 2006 benchmark test.” Photos from Tuesday event at which Alibaba announced the chip suggest its SPECInt 2017 benchmark result is 2.6GHz. Per analysis by Google researcher Laurie Kirk puts it nearly on par with Apple’s M1 chip – which the iGiant launched in the year 2020.
M1 level performance (I am curious if it matches the M1 on efficiency) is not bad for RISC-V.