I7 3770K Overclock Issues

[OneShotRengo]

I've been trying to figure out how I can get a stable 4.6GHz overclock on my i7 3770k, but my pc blue screens often. I am not sure if the overlock needs more voltage, or less voltage. The CPU very rarely ever gets close to 50C when I play. It is usually at 38-42 when idle, and reaches about 48C when gaming. If someone could help me out with this I would greatly appreciate it. I have included pictures of the overclock profile, and my computer specifications are down below.

I am still relitively new to overclocking, I know just about the basics from increasing the multiplier and slowly increasing voltage after each bench test. This voltage seemed to be the most stable, but it doesn't seem to be 100% reliant.

And if it's any help, here is a screenshot of CPU-Z with the overclock on.

It's really strange because sometimes I can go days without a crash gaming for hours, but then every other day I'll just get a blue screen when playing some random game.

PC Specs:
Motherboard: Asrock Z77 Extreme4
Ram: Corsair Vengeance 4x4 1600mhz DDR3
CPU: I7 3770K (Watercooled)
CPU Cooler: Deepcool White Captain 120ex
PSU: EVGA 600Watt 80 PLUS CERTIFIED POWER SUPPLY

 

[4745454b]

You are getting that with 1.25V? Wow.

https://rog.asus.com/articles/overclocking/overclocking-guide-4-7ghz-core-i7-3770k-on-the-maximus-v-formula/

From what I remember, most people go up to 1.35V when OCing that chip. You probably won't need to reach that high if you can basically get there with 1.25V. Try nudging it up, see if you can get stable with 1.28 or 1.3V.