Abstract: A management method of shader clock includes providing a management interface under an operation system environment for receiving an input of a user. When a frequency value to be set of a shader clock input by the user is received, the management method of the present invention can obtain a plurality of parameter values according to the input of the user and respectively write the parameter values into corresponding shader clock registers so as to dynamically set the frequency of the shader clock.

Abstract: An operating mode controlling method is used with a graphics processing unit of a computer system. The graphics processing unit includes a plurality of stream processors. The operating mode controlling method includes the following steps. Firstly, an operating status of the computer system is detected, thereby determining a normal-operating mode or a power-saving mode of the graphics processing unit. If the graphics processing unit is operated in the normal-operating mode, all of the stream processors are enabled. If the graphics processing unit is operated in the power-saving mode, some of the stream processors are enabled.