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Message: <blockquote data-quote="Anusha" data-source="post: 974041" data-attributes="member: 828">When you run the CPU at a lower temperature (anything that works with clock, for that matter), the resistances inside the chip gets lower and the rise times/switch times/delays get lower. So you can increase the clock speed up to the level which it still works at the correct delays. (lower temperature gives more headroom to overclock more)Clock speed is an external input. It is generated by a crystal (well, it is more complex...it is generated by a Phase Locked Loop actually) on the motherboard. Then the motherboard has many multipliers to give the PCI clock, PCI-E clock, FSB and all the other devices.The CPU will multiply the FSB (which is a multiplied value of the original clock generated by the PLL) to the correct value specified by the manufacturer using the multiplier (eg: 3GHz P4E has a multiplier of 15). Multiplier is a fixed value (generally). Buy increasing the FSB, you are actually increasing the PLL clock (that corresponds to the FSB). New mobo's can change the clocks (FSB, PCI etc.) independently.DO YOU THINK THE MOTHERBOARD KNOWS THAT THE CPU IS RUNNING VERY COOL AND THAT IT CAN INCREASE THE CLOCK SPEED???</blockquote>

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