what is the difference and explain it to me in layman's term aka a stupid person would understand.
Quick answer: Given the same frequency, FSB is better to overclock but changing the multiplier allows a much larger overclocking range.
FSB: The CPU has a core bus speed called the front-side bus (FSB). The FSB frequency is an indication of the effective speed at which data transfers between the CPU and RAM. So overcloccking the FSB essentially increases the data bandwidth between the processor and memory.
Multiplier: The FSB is a known frequency value, but the frequency of the CPU is unknown when manufactured. The manufacturer selects a stable multiplier value that defines the base frequency of the CPU. For example, a CPU with an FSB of 320 MHz and a multiplier of 10 means the base frequency of the CPU is 3.2 GHz. You can change the multiplier by overclocking it to a higher value. So for example if the multiplier is changed to 15, the CPU will operate at 4.8 GHz. The multiplier has nothing to do with the bandwidth between the processor and memory but does affect the speed of the CPU.
THANK YOU SO MUCH. i need this to explain to people ways to overclock if they wanted to.