I would say that 120 is too much - for 1920px (still widespread resolution) and split screen (2x120), one would need 8px-wide font to fit and no other borders.

I would say that 120 is too much - for 1920px (still widespread resolution) and split screen (2x120), one would need 8px-wide font to fit and no other borders. 8px-wide font is IMHO not enough for good readability, even VGA in 198x switched to 9px-wide fonts (from EGA 8px-wide fonts). Next natural values are 106 (for 9px fonts) and 95 (for 10px fonts).