Ghacks has the article A Look at Desktop Environments: KDE 5 Plasma.

This time around we will be looking at KDE: powerful, graphically beautiful, and filled with an array of useful software; but the most resource intensive of the major desktop environments.

I think this is a way overblown description. However, I use KDE on a virtual machine on my computer. This article may point to some useful information that I have not been using, so I post it here for future reference.