1, start the computer, and then press Del to enter the main interface of BIOS setup.
2. Select "Frequency/Voltage Control" in the main menu, and then press Enter to enter.
"Host CPU/DIMM/PCI Clock": Set the external frequency of CPU.
"CPU clock ratio" sets CPU frequency doubling.
3. Change the external frequency: move the cursor to the "Host CPU/DIMM/PCI Clock" option, and then use the Page Up key or the Page Down key to make changes. Generally speaking, its value can be adjusted in the range of 100 MHz to 133 MHz (see motherboard manual for different motherboards).
The above operation is to improve the performance of CPU by increasing the external frequency of CPU. For CPU whose frequency doubling is not locked, we can also overclock by increasing frequency doubling. The method is simple, and the CPU performance will be greatly improved by selecting the appropriate frequency doubling in the "CPU clock ratio" option. Of course, if the CPU frequency multiplier is locked, there is no way (CPU frequency multiplier is usually locked now).
Tips: CPU has its own core working voltage, which will affect the overclocking range. In order to obtain a higher overclocking effect, in general, you can further overclock by changing the voltage value in "CPU VIO selection". But with the increase of voltage, the heat emitted by CPU will also increase. Although overclocking improves the performance of CPU, it is actually an invisible harm to CPU. So don't overdo it, it may darken the computer. In order to ensure the stable operation of the upgraded system, heat dissipation and ventilation of CPU are necessary.