It's also nice to minimize how much FPS are dedicated to background screens, If you only have arn't using 1 powerhouse computer that can handle all the wows. Such in my setup, running 3 wows on my main computer, which all run fairly smoothly so I'm able to keep the fps higher. (If only i had dual screens). Then I run 2 on my laptop, but lower the FPS on the background wow so that I can still relatively run smoothly through towns. Stick the laptop beside my LCD screen, and just pretend...