Google的解釋：
Front Side Bus: Links the memory and all of the other devices on your motherboard to the CPU. The speed of the FSB is expressed as a frequency (it's clock speed) and commonly appears at 333,400,800 and now 1066MHz. Raisng the FSB is core to overclocking.
前置匯流排，原文為Front Side Bus，簡稱FSB，是指CPU與記憶體之間的交通連線，表示方式目前為MHz，常見的有上述的333、400、800等，目前可達1066。
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