Current Setup to 4K

[arm1234]

I want to do some upgrades to my system, and the first on my list is bringing my box up to 4K quality. I have played around with a few different models, but my main concern is making my PC capable of driving games at 4K.

Here is my current set up. Specs:
Case : Fractal Design Define R4 Black windowed version
Mobo : ASROCK Z87 Extreme 4
CPU : i5-4670k, OC'd at 3.7 (Just to be safe, First overclock)
CPU Cooler: Corsair H90I (Closed Water Loop)
RAM : 2x4GB Corsair Vengeance DDR3
GPU : EVGA GTX 780 3GB Superclocked
HDD : Seagate 1TB 6.0GB/s
SSD : Samsung 128 GB 840 pro series SATA3
PSU : Seasonic M12 II 750 W Modular drive

I think the biggest addition will be a second GTX 780, but I was reading my MOBOs specs and it says it only supports 4k @ 24Hz.
Since I would be plugging in the display to my SLI setup, that is not the case, correct?
If I had a 4k monitor capable of 60Hz is 2 780's enough to drive that monitor to a pretty good level in modern games?

 

[JackNaylorPE]

750 watts is a bit light for twin 780s, especially w/ added water cooler.
http://www.guru3d.com/articles_pages/msi_geforce_gtx_780_gaming_review,7.html

Here is Guru3D's power supply recommendation:

GeForce GTX 780 - On your average system the card requires you to have a 550 Watt power supply unit.
GeForce GTX 780 2-way SLI - On your average system the cards require you to have a 800 Watt power supply unit as minimum.
GeForce GTX 780 3-way SLI - On your average system the cards require you to have a 1200 Watt power supply unit as minimum.

If you are going to overclock your GPU or processor, then we do recommend you purchase something with some more stamina.

The 4670 k does 3.8k outta the box

Twin 780s is a bit light for 4k in today's AAA Games. Even twin 980 Tis struggle here.

Your Monitor won't be plugged into the MoBo so the 24Hz is meaningless.

 

[iam2thecrowe]

the problem with the 780 is the 3gb vram. Not enough for 4k really, not on more demanding titles anyway. Sli doesnt increase the amount of vram, it cant be shared across cards. You really want a pair of high end 6gb+ cards for 4k, and even then some demanding games arent going to run smooth, especially not with higher detail settings anyway. Forget the motherboard specs, because your not using onboard graphics.