What is FSB

: Front Side Bus. This is the name given to the speed (in Mhz) which different components in a computer speak to the CPU. Each slot on the motherboard comunicates at a preset speed. The most important FSB is that of the CPU itself. The CPUs FSB number determins how fast the CPU communicates with all other components, and thus makes a massive difference to the overall performance of the computer. The FSB is also used to work out the overall number of the Mhz the CPU is rated at. See Multiplier for more details.