pfelberg wrote:- how a single video card with 4 outputs work; if I use the three remaining outputs for a projection, will each be able to display the card's full resolution available, like three distinct video cards would?
Depends on that Video Card's GPU muscle. Kinda depends on the card and its published features.
I once used a Video card that disables certain resolution if the card is not on a particular bus speed.
You going to have to read your manual and/or try it out.
Many factors for an absolute answer.