A graphics display system is provided with a graphics processing module and a display module. The graphics processing module detects whether first frame data is equal to second frame data subsequent to the first frame data, and in response to the first frame data being equal to the second frame data, stops outputting any frame data after outputting the second frame data and a mode switching command. The display module displays graphic images according to the first frame data, and stores the second frame data as temporary data and continuingly displays the graphic images according to the temporary data in response to the mode switching command.