That may be true about the ~500MB RAM, I did not measure it or anything and I agree: if you want to go for <100MB RAM you'll need to look for something else. I

That may be true about the ~500MB RAM, I did not measure it or anything and I agree: if you want to go for <100MB RAM you'll need to look for something else. I actually used i3wm (with separate programs) before on my older computers, but I was pleasantly surprised by KDE performance and decided to stick with it.