E5-2670 vs i7-4930K or i7-4820k for 4k Gaming?

[super sharp]

My MotherBoard can only support LGA2011 socket. I'm planning to buy a CPU that it will not cause me problems for 4k gaming.Also, I use my PC for Workstation Purposes.

 

[PuperHacker]

4 4k gaming all would make it. I would go with the 4930k...