I've got a low end 5770 with hdmi VGA and dvi but NO display port.
I'm aware you need a display port to run eyefinity x3.
But my question is...
If I buy another high end 5770 that has Display port out, crossfire it, and use it as the primary card will that give me 3?
The secondary cards outputs are not used from what I understand.
you will still need an Active Displayport adapter unless one of your monitors is native displayport. also just keep in mind that you have to plug all 3 monitors into one 5770. it cant span both. it should work fine though