In the office I have two 1080x1920 panels, which can each display two columns of code with room to spare. I use the X11 6x13 “fixed” font, and emacs with fringes but without scrollbars, so each column is a few more than 80 characters wide.

At home I have two 1200x1920 panels, a bit more horizontal breathing room, but my code is still less than 80 wide :-)