I currently have 5 displays. The following is how I installed them.
Three 19'' for workspace. One of them is connect directly to the graphic card via DVI. Two of them are using usb graphic adapters.
One 720 projector - directly connect to the graphic card via DVI.
One 30'' dell monitor - currently connect to laptop via VGA.
I would like to connect 30' dell to my main computer.
I do not game or use graphic applications.
What would be my best options? I am thinking to buy two lower-performance ati or nvidia cards and install them as crossfire(???) or sli. Am I thinking correctly?