: Typically uses 400MB–600MB of RAM at idle.
Does Microsoft allow this? Technically, no. You need a valid license for Windows 8.1. However, Microsoft has largely abandoned legal pursuit of personal users recycling old hardware. Many Archive.org listings claim the ISOs are for "educational purposes only" and require you to own a genuine key. Windows 8.1 Lite Archive.org
Run Windows legally for testing
Using unofficial operating systems from third-party repositories presents significant challenges: Windows 8.1 x64 & x86 (Official From Microsoft) (English) 19 Oct 2021 — : Typically uses 400MB–600MB of RAM at idle