I7-2600k stable?

do you mean the temps? and yes you can change the rate at which your fans will speed up to cool your CPU. what you'll do it change it so that it has a lower starting wind up temp
and the a more gradual slope towards the high temps, and when you reach the temp 37C or so have it at 100% fan speed.
this way it will keep it cooler sooner rather than waiting for it to max out before it starts cooling.
if your not talking about temps, i am confused on what your asking because you said volts
and you only mentioned one vcore. which is fine for what you have

those are extremely normal temps and voltages. no need to worry about anything.

just for reference my overclock is:
4.5ghz @1.33v
temps min 30
max 65*

keep in mind i have a better air cooler then you so that is why i get lower temps.