Compact and Superlite can receive security updates via Ghost Toolbox → Update OS. SE cannot.

This is the lightest modern Windows can get while still running .exe files. Idle RAM usage can drop to on Windows 10 and 800MB on Windows 11. Background processes: 20-25. The system feels snappy even on a 2009 Core 2 Duo with 2GB RAM.

You know exactly what services you need, you never print, never use Bluetooth, never need updates, and you’re comfortable with command-line recovery when something breaks. Not for daily drivers.