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At present, mainstream motherboards basically abandon jumper settings and DIP switch settings to change CPU frequency doubling or external frequency, but use more convenient BIOS settings.

For example, Abit's SoftMenu III and EPOX's PowerBIOS belong to BIOS overclocking mode, and CPU frequency doubling and external frequency can be set in CPU parameter settings. If the computer can't start normally after overclocking, as long as it is turned off and restarted by pressing INS or HOME key, the computer will automatically return to the default working state of CPU, so overclocking in BIOS is better.

In this paper, the combination scheme of upgrading NF7 motherboard and Athlon XP 1800+ CPU is adopted to realize this overclocking practice. At present, there are two main brands of BIOS on the market, one is Phoenix Award BIOS and the other is AMI BIOS. Take the Award BIOS as an example.

First, start the computer and press the DEL key to enter the BIOS setup interface of the motherboard. Select the soft menu III setting from the BIOS, which is to upgrade the overclocking function of the motherboard.

After entering this function, we can see that the system automatically recognizes the CPU as 1800+. We need to enter here and change the default recognized model to user-defined mode. After setting to manual mode, the external frequency and frequency doubling of CPU (not optional when it is grayed out) are now optional.

If you need to use boost external frequency overclocking, just press enter here. External clock: 133 MHz. There are many external frequencies to adjust. You can adjust it to the frequency option of 150MHz or higher. Because increasing the external frequency will increase the system bus frequency and affect the stability of other devices, the method of locking PCI frequency must be adopted.

The frequency doubling factor is the place to adjust the frequency doubling of CPU. Enter the option area, and you can choose frequency doubling according to the actual situation of CPU, such as 12.5, 13.5 or higher.

Novice: If the system can't start normally or work unsteadily after CPU overclocking, I heard that it can be solved by increasing the core voltage of CPU. Is this reasonable?

Meng: Yes. Because after CPU overclocking, power consumption will also increase. If the power supply current remains unchanged, some CPU will not work normally and stably due to insufficient power consumption. After increasing the voltage, the CPU gets more power, which makes overclocking more successful and stable.

The core voltage of CPU can be set and adjusted in BIOS (as shown in Figure 7). In general, you can choose the default status. If the system is unstable after CPU overclocking, you can add voltage to the CPU core. However, the side effects of voltage application are very great. First, the heating value of CPU will increase. Secondly, if the voltage is too high, it is easy to burn out the CPU. Therefore, we must be careful when applying voltage. Generally, it can be applied in steps of 0.025V, 0.05V or 0.1V. ..

3. Overclocking with software.

As the name implies, it is overclocking through software. This kind of overclocking is relatively simple, and its characteristic is that the computer will resume the set frequency after shutdown or restart. If the novice is afraid of realizing hardware overclocking at one time, you can test the overclocking effect with software overclocking first. The most common overclocking software includes SoftFSB and software developed by various motherboard manufacturers. Their principles are similar, and they all achieve the purpose of overclocking by controlling the frequency of the clock generator.

SoftFSB is a general software, which can support dozens of clock generators. As long as you choose the model of the clock generator used on the motherboard, click GET FSB to gain control of the clock generator, and then you can set overclocking through the frequency bar. After selection, press Save to let the CPU start working at the newly set frequency. However, the disadvantage of software overclocking is that when the frequency you set is unbearable for the CPU, it will cause a crash or system crash at the moment you click Save.

CPU overclocking secret:

1.CPU overclocking is related to the "constitution" of the CPU itself.

Many friends say that their CPU is still unstable after overclocking, which is the "physique" problem. For the same type of CPU, there are different output overruns in different cycles, which can be reflected in the processor number.

2. The CPU with low frequency doubling is so good.

As we all know, improving the external frequency of CPU is faster than improving the frequency doubling performance of CPU. If it is a CPU without frequency locking, experts will adopt the method of increasing external frequency and reducing frequency doubling to achieve better results, and draw the conclusion that the CPU with low frequency doubling has inherent advantages. For example, overclocking athletes AMD Athlon XP1700+1800+and Intel Celeron 2.0GHz.

The more advanced the manufacturing process, the better.

The more advanced the CPU, the higher the frequency when overclocking. For example, Intel's new Celeron D processor, which has won wide attention, uses 90 nm manufacturing technology and Prescott core. Some netizens have surpassed a Celeron D from 2.53GHz to 4.4GHz.

4. Temperature has a decisive influence on overclocking.

As we all know, the temperature of CPU will increase greatly after overclocking, so it is necessary to equip with a good cooling system. This refers not only to CPU fans, but also to chassis fans. In addition, it is also important to coat a thin layer of silicone grease on the CPU core, which can help the CPU to dissipate heat well.

5. Motherboard is a sharp weapon for overclocking.

A motherboard that can support overclocking well generally has the following advantages: (1) supports high external frequency. (2) Have a good power supply system. For example, a motherboard powered by three phases or a motherboard powered by a single CPU. (3) Motherboard with special protection. If the power supply can be cut off immediately when the CPU fan stops running, some motherboards call it "burning deathless technology". (4) Motherboard with special overclocking setting in 4)BIOS. (5) Excellent workmanship, preferably 6-layer PCB.