Android (and most Linux distributions) is likely to settle for RVA22+V or RVA23 as minimum requirement. There's a lot in there which RV64GC (ratified in 2019,

Android (and most Linux distributions) is likely to settle for RVA22+V or RVA23 as minimum requirement. There's a lot in there which RV64GC (ratified in 2019, I understand unchanged since 2017) lacks. Some of the new extensions e.g. vector and bit manipulation do have a significant effect in performance.