Now that DragonFly can (in most cases) offer video outside of X with KMS, not just text, more console options are possible. By default, your accelerated console will scale to 80×25, but you can now tell it how many columns you want and it’ll automatically scale to fit your resolution. Or you can turn it off.
A running description of activity related to DragonFly BSD.
The default is not 80×25. It is whatever geometry we end up with by scaling the font with a non-fractional scaling factor (i.e. by doubling, tripling, etc. the font size), but the exact geometry depends on the native resolution of the screen. 80×25 is just the minimum which we do not go below when calculating the default.
For example, the default geometry is 120×33 on a 1920×1080 screen, or 128×48 on a 1024×768 screen.