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What does PLL voltage do?

post #1 of 3
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I have been playing with that voltage for a while now and have not seen any difference in stability or performance if it is at 1.8v or at 1.55v. I have it set to 1.55v right now but what does it actually do? does lowering the voltage cause it to degrade? should i just leave it at the stock voltage of 1.8v? thanks.
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Valery
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post #2 of 3
It's not a voltage you should ever really need to change. Most people leave theirs at stock, so it's probably a fine option. Lowering the voltage won't cause your chip to degrade, but raising it too much will.
    
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post #3 of 3
From what I understand, PLL stands for Phase-Locked Loop and it regulates the base clock for your system. A lot of things use the base clock frequency and a multiplier to derive their final operating frequency. For example, CPU settings of 45x multiplier and a 100MHz base clock = 4500MHz CPU frequency. PLL voltage feeds the circuitry that performs the base clock regulation function. I don't know why, but I've heard that there is no reason to lower PLL voltage, but lowering it a touch (maybe 1.70v-1.75v) might help improve stability at very high overclocks.
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