Comment by userbinator

If you're referring to a vertical 1080p screen, which is pretty common for developers, then you'd need a 4.5-pixel-wide font, which would be extremely difficult to read (5-pixel-wide + 1 border characters are probably the limits of having recognisable characters for the full ASCII range), but with it horizontal then only 8 pixels wide would be sufficient, and there are plenty of fonts in that range. Various 8-pixel wide "VGA"/"DOS"/"IBM terminal", as well as the classic "6x13" and "7x14" fonts which are my favourites, would qualify.