A method for dynamically increasing the data processing capability of a computer system is provided. The computer system comprises a processor, a memory and a chipset. The data processing capability of the computer system is classified into a predetermined number of performance enhancing modes. At least one performance enhancing mode transition condition is checked to determine whether to automatically raise the performance enhancing mode of the computer system. The processor is suspended from using the processor bus during the transition of the performance enhancing mode of the computer system. The performance enhancing mode of the computer system is raised by increasing a first working frequency of the processor, a second working frequency of the processor bus and a third working frequency of the memory. The data processing rate of the computer system is further increased when the performance enhancing mode of the computer system is further raised.