Raspberry Pi OS
Raspberry Pi OS (32-bit) Compatible with all Raspberry Pi models
source:Raspberry Pi OS System: 32-bit
Raspberry Pi OS (64-bit)
Compatible with:
Does HA run faster on the Raspberry Pi 3B+ if i install the 64 Bit version? Are there any benefits compared to 32 Bit version?
I had problem with my rPi 3+ and the 64bit version, and I installed the 32bit again.
I think there was not enough RAM memory and the rPi was freezing.
64-bit OS takes more RAM by default
If you have a more memory-starved Raspberry Pi, like the Raspberry Pi Zero 2 W (512MB of RAM) or the 1GB Raspberry Pi 3 or 4, you might be better off using the 32-bit OS.
source:Raspberry Pi OS 64-Bit Vs 32-Bit
I tried both versions (32 and 64 bits) of Hassos in my rpi 3b+.
Unfortunately I2C does not work.
I’m having issues also with onvif camera; ffmpeg seems missing.