Checkpoint64 has a preset for RPCS3 (PlayStation 3): it already knows where the save folder is, backs it up automatically and keeps every version. Everything this site has on RPCS3 (PlayStation 3):
RPCS3 (PlayStation 3)
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Save file location
macOS:
~/Library/Application Support/rpcs3/dev_hdd0/home/00000001/savedata
Linux:~/.config/rpcs3/dev_hdd0/home/00000001/savedata -
Backup guide
Emulator save states are easy to overwrite and rarely backed up. Checkpoint64 gives them a full version history and cross-machine sync — RetroArch, Dolphin, PCSX2, DuckStation, PPSSPP, RPCS3, and Cemu all have presets. Free download.