FSB
Short for Front Side Bus, FSB is also known as the Processor Bus, Memory Bus, or System Bus and connects the CPU with the main memory and is used to connect to other components within the computer. The FSB can range from speeds of 66 MHz, 133 MHz, 100 MHz, 266 MHz, 400 MHz, and up. The FSB is now another important consideration when looking at purchasing a computer Motherboard or a new computer.
The FSB speed can generally be set either using the system BIOS or with jumpers located on the computer motherboard. While most motherboards will allow you to set the FSB to any setting, ensure that the FSB is properly set unless you plan to Overclock the computer.
Issues such as hardware lockups, data corruption or other errors may arise with older hardware, such as old SCSI cards and a newer front side bus such as a motherboard with a 100MHz FSB. Verify your component's compatibility with your motherboard or Motherboard FSB speed. In addition, verify that the FSB is properly set; overclocking the computer can also cause these issues.
Also see: Bus, Back Side Bus, HyperTransport, Motherboard definitions, Multiplier, Northbridge, Overclock, QPI