Display groups always seem to be an obligation for them.
What I'd like to know is, can I have four desktops where I can maximize a browser window and it'll cover only on monitor not all three monitors? And in the case of eyefinity-6 Radeons, can I have six monitors each of them showing one browser instance maximized to each their own particular monitor?
More about :extended desktops requisite display groups
I am actually using 2 Nvidia GTX470s. They are like 3 years old already. Each video card can drive 2 monitors. So I can have a total of 4 independant screens. Each one can have a full screened application. Games always open on the primary screen. To switch from a game to another application I just alt+tab.
If i set the nvidia manager to "Surround" I can only have 3 screens, but windows treats them like 1 large screen.
This works exactly the same for both Nvidia and AMD cards. Most modern basic cards can drive 2 monitors, most mid range cards can drive 4 monitors each. The high end AMD cards can run 6.
In short both AMD and Nvidia have cards that can run 4 screens at once. By default the multiple monitors are set to "extand" which means seperate screens. If you full size a program it takes up only the screen it is centered on.
If you set it to Eyefinity(amd) or Surround(nvidia) all the screens act like 1 giant screen, if you full size a program it stretches across all screens.