i5 6600k overclocking on Z170 PRO GAMING

[overclocking_i5_6600k]

Hey guys,
I would like to ask you a question about overclocking my cpu.
On what values should i put the voltage when I am going to overclock my i5 6600k on Z170 PRO GAMING with SCYTHE SCNJ-4000 Ninja 4?
For example, do you feel like 4,5GHz on 1.2v is okay?
PSU is Seasonic M12II-620 EVO

 

[CountMike]

Start small and check performance and voltages + temperatures at every step, You will eventually hit a sweet point for your particular setup.