Originally Posted by 66racer
I think if you can get your temps lower you might be able to push the cpu farther too if you ever feel the need or want just for fun, possibly with the same voltage, I have seen that in my experience. Im assuming as temp goes up the internal electrical resistance rises and slows compunication down? Guessing from my basic electrical knowledge but cooler temps helped me go farther with the same voltages.
Every transistor has a thermal wattage in which it dissipates. When you have millions of transistors densely packed together, the amount of thermal wattage being dissipated starts to contribute to a factor called "transistor leakage". As 66racer stated, this increases electrical resistance - to internal pathways. This means less voltage is lost in the pathways and more voltage is available to switch the transistors, leading to higher speeds.
However, in general better cooling alone
does not always equate to higher overclocks as the chip will still require a specific amount of voltage to run at set clocks. Better cooling in most cases simply allows you to run more voltage and efficiently dissipate that extra heat, which allows you to overclock higher if the chip is capable. Furthermore, the reason additional voltage helps is because it compensates for the electrical resistance and increases gate accuracy.