lonelybro

actually. the 1050 has 1 DVI-D, 2hdmi, and a display port. idk what io your monitors have, but regardless the 1050 is fine. depending on your monitors, you may need a dvi to hdmi cable. just wanted you to know for when you were ordering your cables if you dont already have them
 
you dont even need the ti version. the regular 1050 is fine.
Good luck with your project. ?

thats correct. so for your use, a gtx 1050 should be perfectly fine.

yeah

would have made this easier if we knew you already had the monitors.
 
but i agree with emosun. a gtx 1050 should be perfectly fine. you can find them for around $130 right now.
and i just checked, the 1050 has 3 hdmi output, and 1 displayport output. so you should be good to go with that.

if you were playing a 1080p video across 4 monitors it would still be the same number of pixels as 1 4k screen. for your use case I highly highly recommend a 4k tv. it will be cheaper, simpler, and look better than 4 monitors with bezels in the middle. or even a 4k monitor depending on how big you want the display to be and your budget.
 
as far as hardware goes, if you go with a 4k tv, a 1060-1070 should be ok since it is prerendered video. if you decide on 4 1080p monitors, i would get a gtx 1070 minimum.

you only need a gpu that has 4 outputs

so an rx580 will offer no benefit other than it simply having the outputs. it's 4k video performance is identicle to every entry level gpu that exists

Umm, 4 x Full HD is 4K. 2x2 grid, 2x1920 and 2x1080 = 3840x2160.
 
For the GPU and CPU i don't have anything specific.
 
From: https://www.quora.com/What-is-the-minimum-system-requirements-to-play-or-stream-an-4K-video