Depending on why you asked, it's also important to note that you can apply various filters to the graphics to give smoothing or sharpening effects at higher resolutions. Also, the resolution of the Geoscape and Battlescape can be effectively increased by increasing the viewable area. For example, you can set it to be able to see much more of the battlescape on the screen, which will effectively shrink all graphics, but also make them look better and sharper by modern standards.