Native Windows tracking, data collection (telemetry), and pre-installed sponsored applications (like Candy Crush or Xbox stubs, depending on the base version used) are stripped out or disabled by default.
Windows 8.1 itself was relatively lightweight compared to Windows 10 and 11. Arium 8.3 takes that lightness even further. Computers that struggle to run Windows 10—especially those with only 2 GB of RAM or slow mechanical hard drives—can often run Arium 8.3 quite comfortably. The low system requirements (1 GHz CPU, 1 GB RAM, 20 GB disk) mean even netbooks and decade‑old desktops can be brought back to life. windows arium 8.3
Before looking specifically at version 8.3, it helps to understand the broader Windows Arium project. Native Windows tracking