Just to clarify, high end for last two ratios are 2560x1600 and 2560x1440. Both were available at least two years ago when I built my current machine, although after some quick research the 16:9 format had some available as early as 2007.
My laptop bias is showing. Those were the highest resolutions available on laptops. They were also the highest commonly-available resolutions for desktop screens, though none of those was the highest that existed.
