Graphics processing system and efficiency adjusting method

The invention provides a graphics processing system and an efficiency adjusting method. The graphic processing system comprises a preset resistor, an adjusting unit and a graphic processing chip. The preset resistor provides a preset resistance value. The adjustment unit receives a selection signal and selects a selected frequency control resistor corresponding to the selection signal from the plurality of frequency control resistors. The graphic processing chip determines an operation clock rate according to the frequency control resistance value of the selected frequency control resistor and an equivalent resistance value provided by a preset resistance value. The graphic processing chip is further configured to adjust the operation clock pulse according to the equivalent resistance value adjusted by the change of the selected frequency control resistor. 本发明提供一种图形处理系统以及效能调整方法。图形处理系统包括预设电阻、调整单元以及图形处理芯片。预设电阻提供预设电阻值。调整单元接收选择信号，并且从多个控频电阻中选择对应于选择信号的选中控频电阻。图形处理芯片依据选中控频电阻的控频电阻值以及预设电阻值所提供的等效电阻值决定操作时脉。图形处理芯片还经配置以依据选