Monitors and video cards: What does Native Resolution mean?
LCD’s are made up of tiny cells in a matrix (called the native resolution). For instance, if the native resolution is listed as 1280×1024, then there are 1280 cells across and 1024 cells down the screen. If you only display at 1024×768, then a large number of the pixels are being ’stretched’ over multiple cells, which is what causes the image quality to degrade.