Setting an FSB speed is related directly to the speed grade of memory a system must use. The memory bus connects the northbridge and RAM, just as the front-side bus connects the CPU and northbridge. Often, these two buses must operate at the same frequency.
Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second. In this case, there is 1 cycle per 2 seconds. So the frequency is 1 cycles/2 s = 0.5 Hz. 6.
For periodic motion, frequency is the number of oscillations per unit time. The relationship between frequency and period is. The SI unit for frequency is the cycle per second, which is defined to be a hertz (Hz): A cycle is one complete oscillation.