It can technically run on 1GB of RAM and older CPUs, making it usable for reviving obsolete laptops. The Verdict
Often includes registry tweaks to disable services, reduce visual effects, and speed up shutdown/boot times. Windows 8.1 Lite Edition 2017 Free Download
I can suggest the safest and fastest way to get it running again. It can technically run on 1GB of RAM
You cannot receive official updates, making the system vulnerable to new security threats. reduce visual effects
While the goal is to make it "fast," removing too many components often results in an unstable system that crashes or breaks key functionality (like networking or USB driver support).
If you are looking to speed up an old computer, let me know: does it have? Is it using a traditional HDD or an SSD ?