Matrox DualHead2Go

The Matrox DualHead2Go converter box doubles your screen resolutions and converts it into an ultra-widescreen display by combining 2 monitor with a single VGA output. Could it be more realistic to play DOOM 3 if its support up to 3 LCD?

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Matrox DualHead2Go dual-display with a single VGA output
DualHead2Go is a palm-sized box that connects to a system's existing single monitor output and appears to the system as a single ultra-widescreen monitor (2560x1024 pixels), which is twice as wide as standard resolutions. It then splits the 2560x1024-pixel Windows desktop into a right and left half, each of which is then sent to two separate analogue monitors.

Matrox DualHead2Go | news source