NCCIN Auto Or Manual. Plus OC Questions

[Aquation]

Hello,
i was wondering if i should leave VCCIN on auto or manual for my i7 5820k OC to 4Ghz at 1.1 volts.

Thanks,
Aquation

 

[Aquation]

Hello,
Forgot to add this in. Should i have C1E on or off. My CPU is overclocked btw.

Thanks,
Aquation