As per the main page at: https://endeavouros.com/
"Minimum system requirements
2.5 GB of RAM
Dual Core Processor (64 bit, x86-64, amd64)
15 GB of Harddrive space
Installer still supports legacy Bios only systems, but it is recommended to run modern EFI (UEFI) systems not on legacy (CSM) mode.
Note:
These are the absolute minimum requirements to use the operating system and be able to run the installer.
Applications, options, games, etc. may need better specifications. Modern browsers alone often require around 2 GB of RAM to run smoothly."