What hardware needed for 4 monitor setup?

[greenkomodo]

Hi guys,

I figured it's cheaper to get 2 GPUs rather than an expensive one with 4 ports. I do not need to game.

I'm looking at 21 inches but I'm unsure can I just buy any monitor brand and not sure what the term is but any bracket/stand. I want the setup as a square.

Thanks for any help.

 

[Wicked Mystic]

Monitors brands don't matter as long as they support needed connectors.