What is the front-end bus frequency in the CPU

North Bridge Chip is responsible for contact memory, graphics and other data throughput of the largest components, and the South-South chip connection. CPU is through the front-end bus (FSB) to connect to the North Bridge chip, and then through the Bei Qiao chip and memory, graphics card Exchange data. The front-end bus is the CPU and the outside Exchange data the most main channel, therefore the front-end bus's data transmission ability to the computer overall performance function is very big, if does not have the fast enough front-end bus, again strong CPU can not obviously improve the computer overall speed. At present, the PC can reach the front-end bus frequency of 266MHz, 333MHz, 400MHz, 533MHz, 800MHz, 1066MHz, 1333MHz, 1600MHz, 2000MHz, several, the front-end bus frequency is larger, Represents the CPU and North Bridge chip between the greater the data transmission capacity, the more fully play the function of the CPU.

Now the CPU technology development quickly, the operation speed is improved quickly, and large enough front-end bus can guarantee enough data to the CPU, the lower front-end bus will not be able to provide enough data to the CPU, which limits the CPU performance to play, become a system bottleneck. A bus is a hardware channel that connects a computer's microprocessor with a memory chip and a device that communicates with it. The front-end bus connects the CPU to the main memory and the peripheral bus to the system components such as disk drives, modems, and network adapters. People often describe the bus frequency at a speed expressed as a MHz.

The front-end bus (FSB) frequency is directly affecting CPU and memory direct data exchange speed. The higher the front-end bus frequency, represents the CPU and memory data transfer between the larger, more fully play the function of the CPU.

The difference between FSB and front bus frequency

The speed of the front-end bus refers to the speed of the data transfer, and the FSB is the speed at which the CPU runs synchronously with the motherboard. In other words, 100MHz FSB refers to the digital pulse signal in the oscillation 10 million times per second, while the 100MHz front-end bus is the amount of data that can be received per second CPU is 100mhzx64bit=6400mbit/s=800mbyte/s (1byte=8bit).

The front-end bus supported by the motherboard is determined by the chipset and generally has sufficient backward compatibility. such as the 865PE motherboard support 800MHz front-end bus, the installed CPU front-end bus can be 800MHz, can also be 533MHz, but this will not play out the full effect of the motherboard.