If you have a quad-core machine, I would switch that to be your secondary. Run the main on the slower comp with a big monitor, and the other 4 on that quad-core machine (each with 1 core) on a smaller monitor. Use Maximizer to tile them 2x2. That way, you get the nice ability to view all 5 on only 2 monitors, and because your main is the only thing running on that other comp, you can set the graphics up higher.