What is a front-end bus in your computer

FSB--front Side Bus (FSB) is the bus that connects the CPU to the North Bridge chip. Choose the motherboard and CPU, pay attention to the two collocation problem, in general, the front-end bus is determined by the CPU, if the motherboard does not support the CPU required front-end bus, the system can not work. That is, the motherboard and CPU need to support a front-end bus, the system can work, but a CPU default front-end bus is unique, so look at a system of the front-end bus to look at the CPU can be the main. The front-end bus is the data channel between the processor and the motherboard North Bridge chip or the memory control hub, which directly affects the CPU access memory speed.

Technical Concepts

The name "front side bus" is a concept introduced by AMD when it comes to the introduction of K7 CPUs, but it has long been mistaken for the term to be just another name for FSB. Generally speaking, FSB refers to the speed at which the CPU is connected to the motherboard, this concept is based on the digital pulse signal oscillation speed, and the speed of the front-end bus refers to the speed of data transmission, because the maximum bandwidth of data transmission depends on the width of all simultaneous transmission and transmission frequency, that is, data bandwidth = (Bus frequency x Data bit width) ÷8. PC can reach the front-end bus frequency 266MHz, 333MHz, 400MHz, 533MHz, 667MHz, 800MHz, 1066MHz, 1333MHz several, the higher the front-end bus frequency, representing the CPU and memory data transfer between the larger, More can give full play to the function of the CPU. The CPU technology develops quickly, the operation speed increases quickly, and the big enough front-end bus can guarantee enough data to supply to the CPU. The lower front side bus will not be able to supply enough data to the CPU, which limits CPU performance and becomes a system bottleneck.