It sounds like you’re referring to a custom, unofficial, and modified version of Windows 8.1 Pro (often labeled “Super Lite Extreme”) that is circulated on torrent sites, YouTube, or forums. Such versions are typically created by third-party enthusiasts who remove many components (Windows Defender, updates, languages, drivers, system files) to reduce disk and RAM usage.
Visual Customization: Some versions include aesthetic tweaks, such as Windows 11-style icons, to modernize the look of the OS. Critical Security Risks Windows 8.1 Pro Super Lite Extreme 32 64-bit
Minimal RAM Usage: Initial RAM usage is often reduced to approximately 400–431 MB. It sounds like you’re referring to a custom,
Reduced Footprint: These builds are significantly smaller than the standard 16–20 GB installation. For example, some versions occupy as little as 2 GB to 7 GB of disk space. Your CPU supports SSE2 and NX bit (most post-2006 CPUs)
For older hardware, this is the difference between an unusable computer and a snappy machine capable of basic web browsing, word processing, and retro gaming.