Does the Redmi 9A support 64 bits?

The Redmi 9A supports 64 bits. There is only one model supporting 32 bits, which is the Redmi 10A.
For your reference, here are some differences between 32bits and 64bits:
1. 64-bit phones can handle more data per clock cycle, leading to smoother overall performance and better efficiency. While 32-bit phones are less capable of handling intensive tasks and large datasets;
2. 64-bit phones support larger RAM capacities, often exceeding 4 GB and up to 12 GB or more in high-end models. While 32-bit phones are limited to addressing up to 4 GB of RAM directly;
3. 64-bit phones provide better support for running multiple applications simultaneously without performance degradation.