What will you be doing that will require more than 16GB?
Couldn't you just have answered the question if you knew? Quite douchy me thinks... I understand that there are upper limits depending on OS, but all things aside, is there any difference in performance between those two configurations?
It's only a year or two since I read on a tech forum that you still don't really need more than 4GB, which is total bullocks. Can hardly play any games now since web browsers, among other things, have suddenly started taking up ridiculous amount of memory. I'm getting sick of closing down back ground processes in task manager.