GTX1080ti x 2 (not SLI) and 3 Philips BDM4350 Displays (3480x2160).

[mjssge]

System info:
i7 - 7700K
32gb Corsair RAM
2 x GTX1080ti gaming X (Mobo doesn't support SLI).
M2 SSD (OS Win 8.1 Pro) and 250GB 870 Evo SSD (data).
Gigabyte GA-H270-Gaming 3 mobo
3 * Philips BDM4350 Displays (3480x2160).
Case: Corsair Carbide 600c Clear
PSU: Corsair HX850i

Thanks to the members (of overclockers.co.uk) who identified that my friends Mobo didn't support SLI I have a follow on question.
He is using his PC solely for playing iracing across 3 displays.
He is using DP connectors (each card has 2 available).
In order to enable nvidia surround to span so all 3 displays form one panoramic view (in game), will this be able to run the game (2 dp in one card, 1 in the other).
it displayed the desktop environment set like this (prior to finding out SLI wouldn't work), but threw a wobbly when I tried to run iracing and unigine Heaven.

Thankyou for taking the time to read my post.

 

[mjssge]

Many Thanks Auxiliary

 

[mjssge]

He is just stretching the display for iracing as a temporary measure. When I connected previously, one card 2*dp 1*hdmi it lost the plot when I tried to enable surround.
He's going to order a new (when available) RTX or AMD equivalent (with 3 * dp), the 850 psu should according to Nvidia/AMD be capable. Hopefully that will make the system more stable.
*When I enabled surround, the Nvidia control panel disappeared, as did a sound driver and one for his simucube steering wheel system.