the information in the buffer typically consists of color values for every pixel to be shown on the display. color values are commonly stored in 1-bit binary (monochrome), 4-bit palettized, 8-bit palettized, 16-bit high color and 24-bit true color formats. an additional alpha channel is sometimes used to retain information about pixel transparency. the total amount of memory required for the framebuffer depends on the resolution of the output signal, and on the color depth or palette size.