Red vs Green vs Blue - Extras
Extras
One nice thing about the Nvidia setup is PhysX. While it's not a deal-breaker, it is a nice to have. If you are using an Nvidia card with your Triplehead2Go, you will enjoy this, whereas you will not if using an AMD card.
The Triplehead2Go has some unpleasant quirks. For instance, some games such as DiRT3 don't recognise that it is a multi-monitor setup, so your nicely centered HUD isn't centered at all - it's spanned. That sucks! At first I suspected the game may have been running in DX9 which was causing the spanned HUD, but MSI Afterburner confirmed that the game was actually running in DX11, so it’s an issue when using the Triplehead2Go.
Screen tearing is something that seems to affect the Eyefinity setups pretty badly. There are always threads about it in the Eyefinity forum. The easiest way to test this is to grab a window (like the Steam main window or a Windows folder with pictures in it) and drag it around your monitors. If your system has tearing, you'll notice the window that you are moving has a split in it somewhere. Usually this will only happen on one or two monitors and will happen in game also. For me, it happens on my two outside monitors (connected by DVI). It's pretty noticeable on my system if you are looking for it.
On a bright note for AMD users, the update to Eyefinity 2.0 introduces the ability to natively move your taskbar. In this example, I have it set to the center monitor. Bezel correction does not hide the edges of it either, it takes that into account.
Just for the curious, the Triplehead2Go seems immune to tearing when using the same AMD card that did have tearing in Eyefinity. What is interesting is that the connection to the TH2G is using the same connection that goes to an outside monitor in Eyefinity that experiences tearing.