Patent ID: 8312311

Claim:
A computer system for automatically overclocking, comprising: an overclocking element having a signal standard; a detecting circuit for acquiring an input/output (I/O) signal of the overclocking element; and a basic input/output system (BIOS) for comparing the signal standard with the I/O signal to get a comparing result and adjusting a reference clock according to the comparing result, the reference clock is outputted by a clock generator; wherein the reference clock is the input signal of the overclocking element, and the detecting circuit is a phase detecting circuit for detecting the reference clock and the I/O signal to get a phase difference, the BIOS gets the comparing result according to the phase difference, wherein the BIOS works out an I/O hold time of the I/O signal according to the phase difference and compares the I/O hold time with a rated hold time to get the comparing result.