Goal is for steady 60fps at 4K.  Looking for any feedback on compatibility issues or improvement in build.  Thank you all.
 
Case EVGA DG 87
CPU: Intel I7 6800K (LGA 2011-3)
CPU cooler: Corsair hydro H115 (planning to install into top of case)
MB: EVGA X99 Classified
Power: 1000W EVGA SuperNOVA
Video Cards: EVGA GTX 1080 Hybrid x 2 SLI (Slot 1 and 4 on MB) with pro SLI bridge 4 slot model.  Plan to push pull these out the back of the case since there's 2 rear fans installed on the DG 87
Sound: 7.1 from on board, can always use optical adapter if I get an entertainment system for living room
RAM: Corsair Dominator Platinum 32GB (4x8GB)
Hard Drive Samsung 850 Evo 2.5" 1TB
TV: LG 65UH8500 (debating this or just getting a dedicated 4K monitor...about same price)
 
 

Looks like a very nice build
 
Double check that SLI Bridge spacing though 
 
---> Looks to me the EVGA PRO SLI BRIDGE HB (2 Slot Spacing) P/N: 100-2W-0027-LR ---> is what you Need
 PCIe 2 & PCIe 3 will be skipped between the GPUs = 2 slot
 
TV --> check those specs for PC input carefully--> 60 Hz ? 
 
Make sure you can find a HDMI 2.0 Cable for the TV unless DP 1.2 or better is supported
 
Love my G-Sync 28 inch Monitor @ 4K 60Hz
 

Thank you for your feedback Cool GTX!  I may have to pull up a pdf of the motherboard manual.  It looks like the 16x support are in slots 1 and 5 (this is why I couldn't get a sound card)...if this doesn't work I will take your advice and switch MB.
 
I didn't account for PC input to the TV, thank you so much for that.  If it will be too much for a hastle, I will just get a dedicated monitor and the fiancee will have to wait on a new TV ;)

drmarc
Goal is for steady 60fps at 4K.  Looking for any feedback on compatibility issues or improvement in build.  Thank you all.
 
Case EVGA DG 87
CPU: Intel I7 6800K (LGA 2011-3)
CPU cooler: Corsair hydro H115 (planning to install into top of case)
MB: EVGA X99 Classified
Power: 1000W EVGA SuperNOVA
Video Cards: EVGA GTX 1080 Hybrid x 2 SLI (Slot 1 and 4 on MB) with pro SLI bridge 4 slot model.  Plan to push pull these out the back of the case since there's 2 rear fans installed on the DG 87
Sound: 7.1 from on board, can always use optical adapter if I get an entertainment system for living room
RAM: Corsair Dominator Platinum 32GB (4x8GB)
Hard Drive Samsung 850 Evo 2.5" 1TB
TV: LG 65UH8500 (debating this or just getting a dedicated 4K monitor...about same price)
 

I have that tv. I love it for watching movies but it is not great for pc gaming. Up close the pixels are just too large. If you want to game from the couch at a distance go for it.

PCIe 5 = x4 (Gen 2 only, 4 lanes pulled from PCH) --> Manual (Part 1) page 9
 
MB included SLI bridge will work (3-way SLI Bridge, P/N 401-MB-0023-01, came with my MB) ~ 80 mm spacing
 
 
My EVGA X99 Classified is setup like this:
 
GPUs are  in PCIe 1 & 4 --> gives x16 speed, in both slots, with 40 lane processor
 
My Intel NVMe PCIe SSD is in PCIe 6 at x8 speed
 
 
Also I'd consider the EVGA 1200W PSU, about the same price if you shop around, just added one to my builds

Cool GTX
PCIe 5 = x4 (Gen 2 only, 4 lanes pulled from PCH) --> Manual (Part 1) page 9
 
My EVGA X99 Classified is setup like this:
 
GPUs are  in PCIe 1 & 4 --> gives x16 speed, in both slots, with 40 lane processor
 
My Intel NVMe PCIe SSD is in PCIe 6 at x8 speed
 
 
Also I'd consider the EVGA 1200W PSU, about the same price if you shop around, just added one to my builds

Thanks cool for confirming the board configuration :) I'll look into the power supply too.

@shockjockey I'm really glad you told me this and can speak first hand. I also looked into the best 4k monitor for sli 1080 and it looks like asus pg348q takes the cake for 60 FPS and actually supports 120hz if I wanted to use 2K or downsample at 4k for fps games.

Now it's just a matter of waiting for the 1080 hybrids to restock, and I'll be in business :)

Thanks again fellas.

Cool GTX
Also I'd consider the EVGA 1200W PSU, about the same price if you shop around, just added one to my builds

When I did my power testing using the Killa Watt device, the entire machine was pulling only 500 watts with a single 1080 overclocked running at 100%, 6 or 8 cores on my 6900 running at 100%, and an EVGA 960 SSC (for folding only) running also at 100%. 
 
Instead of my extra 960 he'll have an extra 1080, but that's still probably only going to add another 60 W or so. Ok, so round it up to 600 watts total if everything is running at 100%. It's why I decided I was fine with the 850 W EVGA power supply I already had. If the OP is going with a 1000 W power supply already, I think at most with this build he'll be using 50-60% of its capacity. Going with a 1200W psu will just cost more in the initial purpose and probably in electricity over time.

sethleigh

Cool GTX
Also I'd consider the EVGA 1200W PSU, about the same price if you shop around, just added one to my builds

When I did my power testing using the Killa Watt device, the entire machine was pulling only 500 watts with a single 1080 overclocked running at 100%, 6 or 8 cores on my 6900 running at 100%, and an EVGA 960 SSC (for folding only) running also at 100%. 
 
Instead of my extra 960 he'll have an extra 1080, but that's still probably only going to add another 60 W or so. Ok, so round it up to 600 watts total if everything is running at 100%. It's why I decided I was fine with the 850 W EVGA power supply I already had. If the OP is going with a 1000 W power supply already, I think at most with this build he'll be using 50-60% of its capacity. Going with a 1200W psu will just cost more in the initial purpose and probably in electricity over time.

80 Plus Platinum is 92% efficient at 50% load, guessing he will be 500-600W full loaded
 
I paid @ Amazon, $206.99 w/ free shipping,
EVGA SuperNOVA 1200 P2 Power Supply --> P/N: 220-P2-1200-X1 --> earlier this month
 
My folding power draw as measured:
 
i7-4790K, Z97 MB, custom loop, 2-way SLI Titan X SC [ GPU @ 41C, Room 27 C] (GPU + 325 +43mV) = 650 - 800W full system
 Slider @ 150% power target (custom BIOS) & 95 C
 
i7-5960X - AIO, EVGA X99 Classy MB, EVGA 1080 FE (GPU +200, Mem +400 +0nV) & 1 EVGA 980 SC =
500- 560W - full system --> Slider @ power 120%  & Temp 92 C

I'm not sure who told you but the PG348Q does not do 120Hz. It only goes up to 100Hz. It's a 3440X1440P monitor also known as ultra widescreen.

daddyd302
I'm not sure who told you but the PG348Q does not do 120Hz. It only goes up to 100Hz. It's a 3440X1440P monitor also known as ultra widescreen.

You're right, I am seeing on specs it supports 100 officially, but I was reading an article (I'll find and link) that says the monitor can be adjusted to 120...but it looks like it did not work for those users. I'm planning on keeping it at 60 anyway, I haven't seen 100hz in person before and if I can get 100fps at 4k by sacrificing image, I guess I can see which I prefer. Thank you for the clarification.