not really...i have no problem going back to single monitor which I am doing at work. At home I have dual monitor and the second monitor I have the background changing pictures every 2 min. Nice big photoframe for me....

I watch movies in that second monitor also while i continue to work or do other stuffs in the main monitor.

This is not true. Multi monitor doesn't need super powerful GC. That only apply when you want to play games in multi monitor. For normal windows usages like browsing or typing letters and so on, just a normal GC that support multi monitor will do. You can still play games under 1 monitor if your GC not powerful enough. No need to waste money on GC just for normal desktop usage.