I know this thread a few weeks (months?) old but I’d like to chime in as it’s my first post in the forums and I can offer some helpful advice in the matter of the pros and cons of using Matrox hardware.
The Tripple-head2go device can output a virtual display size of 3840 x 1024 (or 4080 x 768 if you have 3 widescreen format monitors). That’s a lot of pixels. As such, you need a graphics card that can push all those pixels. But it can be used in dual-head mode if you don’t have 3 monitors laying around, you can add another monitor later.
The new tripple-head2go digital edition has bezel management which allows you ‘hide’ parts of the image behind the bezels (doesn’t work in dual-head mode). This feature has a price, the width is removed from the flanks of the display reducing overall image size.
Wideview ( http://wideview.it/ ) is a more practical option in terms of using bits you have laying around the house, although you look at some set-ups and have to wonder and how much it costs to run 5 to 10 PCs with monitors.
I find the the Matrox GXMs practical and can almost justify it as a work expense (as a developer I find the desktop real-esate bloody marvelous). In the UK “Scan” computers had them for a good price (good = cheapest I could find).
Clear skies