When AMD launched the Radeon HD 6870 and 6850 graphics cards in 2010, we were told that they could run six monitors at the same time, even though they only featured five monitor connectors. In order to be able to enjoy EyeFinity 6, as AMD calls it, you had to use an MST (Multi Stream Transport) Hub. These hubs were supposed to follow on soon after, but that turned out to be very optimistic. Parties such as Club 3D did eventually come out with an MST Hub, which turns out to be useful for more than just multi-monitor gaming. We took a closer look.
The Radeon HD 6000 series was the first to support DisplayPort version 1.2. One of the characteristics of that version is that video for multiple screens can be transmitted through a single connection, or multi-stream transport. That means in the case of the Club 3D MST hub, three monitors can be connected to a single DisplayPort 1.2 port.
The Club 3D MST Hub makes it possible to connect six monitors to graphics cards capable of supporting that many screens, but without enough connectors. The number of video cards equipped with six DisplayPort connectors for an EyeFinity 6 setup is very limited, so a hub such as this will be needed most of the time. However, it's capable of much more, for example for non-gamers, and especially for laptops.
There are other ways of adding more monitors to a PC or laptop with a limited number of connectors. The Matrox DualHead2Go and TripleHead2Go, for example. When you connect two Full HD monitors to these, they will act as one monitor with a resolution 3,840 x 1,080 pixels. It works well, but it's not possible to make the computer see your monitors as separate screens. The Matrox software does a good job of compensating for this, but it's still not the same as actually have two distinct monitors. They're not cheap solutions either. You can read the rest of Club 3D MST Hub preview on Hardware.info.