Firstly, please stop, you really dont know what you are doing just yet.
The only right thing you said was that 1.45v is too much for a measly OC, 5Ghz territory there.
On average the 6700k will do 4.5Ghz 1.35v.
The first thing you need to do is control the Vcore, so stop usign AUTO vcore.
Set Vcore to Manual, and enter 1.35v.
I dont know what board you have, but youll want to play with the load Line Calibration level until the load Vcore is close to the Idle Vcore, for Asus that seems to be level 5.
Use CPUz to read the Vcore, and Prime95 blend to load the PC up to 100%.
Once you have that complete, start playing with the multiplier, start at 4.4Ghz, try Prime95 Blend.
Small FFT will probably cause the CPU to over heat.
I choose Blend, click custom, enter 256k for the minimum FFT length, and a 3/4 of my RAM in the memory field.
Dont overclock the memory whilst you do this, just set the memory to 2133Mhz.
Rune 10 minute test of Prime95 to get a feel for the Vcore/Temps/Stability, once you find a good balance, freeze the multiplier and start reducing the Vcore whilst running 1 hours Prime95 tests.
If you find the 1hour tests fail, then re think your Vcore/Multiplier balance. Maybe more vcore if temps are ok, or if not then reduce the multiplier and vcore.
