Quote Originally Posted by confusedtx5 View Post
Make sure your displayport to DVI adapters are active types (have a USB port).

As for the Matrox boxes, they're limiting in that you have to use the same resolutions per screen, in the same layout. So you can't do say, 2x 1680x1050 in portrait plus 1x 1920x1200 in landscape. On top of that, the TH2Go has a maximum res of 1920x1080 @ 50Hz per screen. A. Not many screens at that res would support 50Hz, and B. anything above that (2048x1152 or 2560x1600 per screen) would not work.

The advantage the Matrox boxes have is they can be used on any graphics card with the correct display output - great if you want to expand your laptops screen real estate. But that's about it.
The Radeons with their capability of running more than 2 screens natively, as well as in Eyefinity mode is just superior in every other way.
Regarding USB on adapters: Not all of the ATI eyefinity certified adapters have it, but that shouldn't be too much of a problem.

As far as being able to run more than two screens natively: yes, it's cool as long as you're not doing anything too terribly taxing across all the screens. there's a reason why nvidia made you have to use SLI to do three screens: in many games you'll want more computing power to get what you want (eye candy nom nom) at the resolution desired.