Help - Overclocking 6850K on X99-Gaming-5P 128G

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Hi there all..I need some assistance with my new build. #OblivionPC

I put together an Gigabyte X99-Gaming 5P (updated to the latest F23 Bios), a 6850K, and 128 Gig of Corsair Dominator 3333 DDR4 (Running manual at 3200, because the board doesn't list 3333 as an option). The system is water cooled with an EK Nickel block and a massive 4 bay Radiator system.. Idle temp is in the low 20's, under 100% load highest has been high 70s. (C) I have been trying all night to get the overclock stable. I know the 6850K isn't the best OC processor, Average 4.2-4.5Ghz, but im having a beast of a time getting 4.2 Stable..

Here are my bios screens, apparently Gigabyte has SO many voltage/options that other boards don't have (named different) that I have had to look and search online but i don't know what is what on this board so maybe someone can help and point me in the right direction.

So far at 4.2ghz i have been able to get IBT to run stable, but Prime95 will not. I dont need 7Ghz

but I would like to get it 100% stable in-between 4.2 and 4.6 someplace. Any help is much appreciated. Pics are linked below. Also note the PSU is a Corsair Digital AX1500i.

https://ibb.co/kE7isR

https://ibb.co/kFt1e6

https://ibb.co/jVCSK6

https://ibb.co/gRodRm

https://ibb.co/jdjJRm

https://ibb.co/n8cuz6

https://ibb.co/foZJRm

https://ibb.co/eJUk6m

 

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Plz host pics here .
IBT may be unrealistic for most ppl .
Aidia64 and real Bench get suggested here alot
Can you download CPUZ and post Main SPD and Mem tabs .