Reducing Voltage on a Pentium D 820

[YoureDoingMeDamage]

Is it safe to do so? I was thinking it might help it run cooler. Also, does simply overclocking a processor make it run hotter or does only adding voltage make it run hotter?

 

[J_I_M_B_O]

If you OC somthing you have to give it more power, making it hotter
And looks like you want to under clock

 

[Eva_Unit_0]

Yes it's safe to under-volt the cpu. Often times a cpu can run stable with less voltage than is specced by the manufacturer. With some tweaking and testing you can probably decrease the voltage a fair amount and keep it stable, though don't expect that to magically cut the heat dissipation in half or anything. It will be a mild change.

Also, overclocking a chip increases the heat dissipation but not by a whole lot...it's mostly the voltage increases that increase heat output.

 

[Esben]

If your default voltage is 1.4v and you manage to reduce operating voltage to 1.25v, your power consumption is reduced to 80 %.

If your default voltage is 1.25v and you manage to reduce operating voltage to 1.1v, your power consumption is reduced to 78 %.

In total a reduction from 1.4v to 1.1v means a power reduction to 62 %.