Krysbrown

When working at the bleeding edge, sexiy is what works not what looks "good".
 
At the design stage "probably" can be tested rather than guessed at.

https://www.pny.com/NVIDIA_NVS_810_for_Eight_DP_Displays

Why are you not using gpu with more display outputs?

technically all you need to get the displays working it open source display wall software and 3 display cards and 1 rendering card. 

what industry is that ? you can't just throw huge numbers at a project and expect it to work . there's a reason people get paid to install and figure out how to do AV installations  it does sound fun but it also sounds like id be liable when inevitably it all goes to hell because i have no experience whatsoever in doing what i've been hired to do lmao.
 
best of luck i expect a update once its installed. 

These are real numbers ? and I know it doesn't make sense, unless you're in the industry.

are you just making up numbers or did this guy win the lottery and have no idea what hes doing lol. 300k AV room. even with the best of the best i can come up with atop of my head doesnt come close to 300k 

For gpu you should probably be looking at something like the Nvidia NVS 810 with 8 displayport outputs.
 
You will want a workstation level motherboard to house the three gpu required to drive the 18 displays. This likely means using an HEDT platform with sufficient PCIe lanes, (Not all Intel HEDT cpu have sufficient PCIe lanes for good multiple gpu support.)
 
Lots of custom software likely required to make the thing work seamlessly.
 

they are specifically made to output to multiple displays. most card dont support more than 3-4 displays at once. 
 
there could be a worry regarding tearing between each set of 6 displays, but to avoid that you would need quadros and display sync cards. (not sure if AMD has something similar). 
 
 
you would also be having 1 main GPU handling all the rendering and these cards purely acting as displays. 
 
 
 
edit: https://www.amazon.com/ATI-FirePro-DisplayPort-PCI-Express-100-505746/dp/B008MHAMT2 
 
this is the GPU, and you would need to look for some open source software to make the cards play nicely as a single unit. 

would be sort of hardware dependant if he wants a jungle that moves tho ? and yes it's most likely never ever going to become a reality lol. if i were handing 30k+ over to someone id like them to have at least 100 serious custom builds under their belt. 

Will this play roblox at 30 fps?
Asking for a friend.

Your budget is 30K? All you need is GPU acceleration?
 
Oh boy you're in luck: https://www.ebay.com/itm/8-GPU-TITAN-RTX-RIG-Crypto-Mining-for-altcoins-super-computing-40-000-cores-/132465395852

there is most likely open source voice recognition software he can use to do what he wants. 
 
a project like this is mostly time consuming, its not very hardware demanding. 
 
 
edit: im also just calling out that the project is most likely fake as a person who has been charged with doing this sort of project would most likely know what he is doing and have a reasonable gameplan.

if its not for gaming and only 1080p why not just fill a EATX with gpu's clearly budget isn't a problem

judging by the tone of the project, the hardware you think you need to do something like this, the fact you went to a forum with seemingly no game plan. 
 
 
i think this is another dream setup sort of thread. 
 
also, you just need 3 of these puppies:
https://www.amazon.com/dp/B00C7EPSVS/ref=as_li_ss_tl?creativeASIN=B00C7EPSVS&linkCode=w61&imprToken=uOkx.0xFWKbvp2QJXcvGbw&slotNum=20&tag=mmcdl-20
 
a solid GPU for renders. get some PCIe split cards for ease of use. get an 8 core 1900x and done. 

@GoldenLag explained it in detail way better than i did xD. go with his idea. for the voice command stuff it sounds like a coding job which is way out of my league. maybe he can pay someone to write him an AI lol