Raspberry Pi OS now has a 64-bit version.
This week Raspberry Pi released the first version of their Raspberry Pi OS Linux distribution with support for 64-bit ARM processors. I have been waiting eagerly for this as it permits the use of all of the available RAM in the 4GB and 8GB Raspberry Pi 4 models. The 32-bit version of Raspberry Pi OS has a patch that allows it to address more memory, but it limits any single process to only 3GB of memory. I’ve been trying out other flavors of Linux on my Raspberry Pi 4, but so far only Raspberry Pi OS provides full support for all the features and capabilities of the boards.
Spending some time this weekend prepping new Raspberry Pi OS SD cards and taking it for a spin.