Firingsquad heeft een review gepost van de G400 Max. Hier heb je wat info over Dual Head technology:
Matrox's DualHead technology differs from traditional multi-monitor support because the second output device can be anything from an additional monitor, a TV, or a flat panel display. Additionally, the second display output can function at a different refresh rate than the primary display device. That way, you can lose a lot of the flicker that usually is resultant from using a TV as a display device.
The second display, though, does not have the full power of the first. The reason why is because it does not connect to the G400 MAX's super fast 360MHz RAMDAC. Instead, the Cathode Ray Tube Controller (CRTC), which controls the second display output, goes through the MGA-TVO chip for analog signals, which causes it to be limited to 1280x1024 maximum resolution (for the second display device).
Verder benchmarks en de inmiddels gebruikelijke bump mapping screenshots. Firingsquad heeft trouwens een vette lijst van games met bump mapping support.