what is the difference between windows 8.1 and rt8.1?
Windows RT 8.1 is a Windows-based operating system that's optimized for thin and light PCs that have extended battery life and are designed for life on the go. Windows RT 8.1 only runs built-in apps or apps that you download from the Windows Store. ... What's the difference between Windows RT 8.1 and Windows 8.1?