@matt As long as you don't have to use a modern web browser, you're fine with even less. However, web is such an essential part of modern computing that even writing stuff or doing your calculations on LibreOffice Calc gets a bit tricky after a while if you don't have a browser open somewhere. And using Lynx or Dillo as a substitute will only work on a handful of websites these days. Midori used to be able to handle most sites, so it might be an acceptable low-ram substitute. I'ts been a while since I've tried that one though.