I am pondering buying several micro SD cards for cross use among Nano and Xavier NX. UHS-I is a fairly obvious requirement. Some other speeds are “compatible”, but will throttle back to slower speeds. What I am wondering is if all UHS-I cards will work at their rated speeds regardless being UHS-I/u1 class 10 80MB/sec, or being UHS-1/u1 class 10 100MB/s, or being UHS-1/u3 A2 160MB/s?
Any of these should be “compatible” and work, but my question is whether paying for the extra speed of going from 80MB/s to 100MB/s or to 160MB/s will actually be useful? For all I know the faster bandwidths could work or might just be ignored and cost more. I am interested in general what speed ratings will actually help within micro SD cards having a UHS-I rating.