Yes, but if you left it on Auto, the voltage will increase as you increase the CPU multiplier. Manually set the voltage to 1.2v and see how high you can actually go without increasing it. Doing it like that will also decrease temps.
Not gonna lie, read a few of your posts and easy to tell you definitely no more about this stuff than I do (doesn't take much) I comment based on my own experiences only.
I do have a question for you though,
Is the only benefit of setting the voltage decreasing the temps? the only reason I ask is I'm 100% perfectly fine with my temperatures and if my overclock is stable I don't see the need to really mess around with it.