Thank you for responding!
I wanted to connect 8 monitors to two video cards, 4 monitors per card.
I have only one video card installed, but since the new AMD cards do not support crossfireХ. The question was, if I buy a second video card and just plug it in, will the video outputs on the second video card work or not?
I am a trader, and I already have 4 monitors that are sorely lacking for work, besides, I also like playing video games, and it becomes uncomfortable when only 1 or 3 monitors work during the game.