What does it require to run 3 * 4k displays?

[KaareZ]

What does it require to run 3 * 4k displays in a high graphics game?
I have thought about getting:
32 GB 3300 MHz ddr4 ram,
4 Samsung evo 1 TB SSDs in raid 10 (2TB usable space),
2 6TB hard disks,
Intel Core i7-5930K and
3 way SLI using nVidia GTX 780 ti.

Would 3 * GTX 780 ti be able to run a game using 3 * 4k monitors?

Side question: Is it possible to feel any difference between a 60 hz and a 120 hz display?

EDIT:
Felt like I was not clear enough.
I both want to know what it requires to run a high graphic game on 1 screen and then run other stuff at the 2 others. And then what it requires to run a high graphic game on all 3 screens.

 

[CGurrell]

3 780ti's will probably do the trick in terms of one screen gaming, the other 2 for other stuff, but for gaming on 3 4k monitors, I don't think any graphical solutions are available. Even the r9 295x2 in Quad-Crossfire, or 4 780ti's, would struggle at max settings at those resolutions.

However, if you tried 3 780ti's on 3 4k monitors, and you felt like at maxed settings you aren't getting the fps, you could turn down AA a little (as at higher resolutions, AA isn't needed as much)

Side question answer: Yes. See https://www.youtube.com/watch?v=a2IF9ZPwgDM

EDIT: New nvidia GPUs are rumoured to be coming soon, so hold off and see what the new cards can offer.

 

[sla70r]

The one concern I would have is the lower amount of VRAM for the 780 ti. I would wait for the 980`s coming out in a couple weeks as they should give you more VRAM to work with and better 4k performance.

 

[CGurrell]

The one concern I would have is the lower amount of VRAM for the 780 ti. I would wait for the 980`s coming out in a couple weeks as they should give you more VRAM to work with and better 4k performance.

+1. vRAM is a big issue when it comes to 4k gaming (something that completely slipped my mind). You could try 4 780 6GB cards in Quad-SLI, assuming you have the motherboard for that, but again wait it out for the rumoured new cards