When comparing Windows 8.1 vs LibreELEC, the Slant community recommends LibreELEC for most people. In the question“What are the best operating systems for a Home Theatre PC?” LibreELEC is ranked 3rd while Windows 8.1 is ranked 18th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Hardware Compatibility
Windows has excellent x86-based compatibility, and has recently announced ARM compatibility as well.
Pro Familiar Windows Interface
As opposed to unfamiliar and purpose-built Linux distros, Windows still reigns supreme for sheer usability and ease of use.
Pro Customizable UI
There are many that can be used to customize the MetroTile screen and add custom tiles. Then, by adding custom tiles you can configure them to open any application or web page that you need. For example: Netflix, HBOGo or Steam.
Pro Free and easy to install and use
Pro Ease of use!
Ease of installation and small memory foot print. Boots straight into kodi. Lighting fast operation. Huge support network. Regular updates! Follows development of kodi closely.
Pro Runs on a USB stick or SD card as small as 8 gb
Check here for full specs and requirements.
Pro Runs well on a Raspberry Pi
Runs cooler than Kodi on a Pi.
Cons
Con Expensive
You will need to purchase a Windows license.
Con Resource Intensive
In contrast to many dedicated solutions which can run on nearly anything, running a full Windows install requires decent hardware. This is not a lightweight solution.