CPU Core Voltage Offset Mode Overclocking

At this point we can reboot the system; the CPU voltage will be offset from stock voltage automatically – as you increase operating freqeuncy, the default voltage
will automatically increase. In order to find out what the new load voltage is, we can boot Windows and run a stress test, while keeping ROG CPU-Z open to get a rough
idea of how much voltage the processor is seeing under load or if you’re handy with a multimeter, the ROG boards have a measurement point situated near the DIMM
slots allowing for a more accurate reading.

With the “-“, (negative) voltage range selected, the voltage you select will be subtracted from the load voltage we saw in the operating system.

For example if our full load voltage was 1.376V in the operating system, and we’d like it to be 1.32V instead, we simply set 0.05V as
the negative offset (1.37V-0.05V=1.32V).

Bear in mind though that this will also offset your idle voltage by the same value. As an example, with the default voltage settings,
our 2500K processor’s idle voltage (at 16x CPU multiplier ratio) is 1.045V. If we subtract 0.05V from the full load voltage, the idle voltage
will be reduced by the same value:

So if we offset the voltage too far with the negative voltage scale, there will come a point where the idle voltage is no longer sufficient to sustain
the idle processor clock frequency.

If we wish to add voltage to the full load VID, we simply use the + offset and increase to increase the voltage level. The “+” offset scale isn’t as direct
as the” –“ scale when it comes to changing voltage, that’s because one of the features of SVID (serial VID) is that it allows the processor to request
voltage based upon operating frequency, current draw and thermal conditions- hence adding 0.05V to 1.376V results in a full load voltage of 1.40V.

Similarly the idle voltage is increased by only 0.025V, too:

That’s why we recommend getting a feel for how the offset range works with your processor, before pushing the system hard. Offset Mode may appear
to be an overly complex way to overclock initially, but once you get the hang of it the results are very worthwhile.