Why does the power increase faster than linearly with respect to voltage? Is this a direct effect of physical laws or does it have to do with processor design?
mm
@lm123 this is because power is equal to voltage squared divided by resistance (P = V^2/R). So assuming resistance stays the same, if you double the voltage, you quadruple the power.
DudaK
I understand that higher frequencies equate to higher power, as evident with light waves. But how does frequency of a clock relate to core voltage?
pmassey
@DudaK It's because of the capacitance of MOSFET-based circuits. By increasing the voltage, the capacitors are able to charge and discharge faster, which allows for faster operation of the circuit and higher clock frequencies. source
Why does the power increase faster than linearly with respect to voltage? Is this a direct effect of physical laws or does it have to do with processor design?
@lm123 this is because power is equal to voltage squared divided by resistance (P = V^2/R). So assuming resistance stays the same, if you double the voltage, you quadruple the power.
I understand that higher frequencies equate to higher power, as evident with light waves. But how does frequency of a clock relate to core voltage?
@DudaK It's because of the capacitance of MOSFET-based circuits. By increasing the voltage, the capacitors are able to charge and discharge faster, which allows for faster operation of the circuit and higher clock frequencies. source