What does the "spread spectrum" setting in the motherboard BIOS mean?

It means spread spectrum, which is a communication technology that expands the spectrum of transmitted signals to a wider bandwidth than the original one, and is often used in the field of wireless communication.

The stricter definition is divided into two parts:

1, after spread spectrum modulation, its signal transmission bandwidth should be much larger than the original signal;

2. The sender will adopt a unique code, which has nothing to do with the transmitted data, and the receiver must also spread spectrum with this unique code to get the data of the sender.

Extended data:

The option of "spread spectrum" can often be seen in the BIOS settings of personal computers. The main purpose of this option here is to reduce electromagnetic interference, which may effectively reduce the amount of electromagnetic radiation according to different system configurations. However, the side effect is to reduce the clarity of the signal, which has a great influence on the stability of the system after overclocking.

If there is no electromagnetic interference problem, it is suggested to set this item as disabled to optimize the performance and stability of the system; Otherwise, this item should be set to enabled. ?

This item must be disabled if the cpu is overclocked. Because even a small pulse value drift will lead to cpu overclocking.

References:

Baidu encyclopedia-spread spectrum