Accelerated-X Summit Feature Highlight

DualView™ On Desktop Computers
DualView™ - An Accelerated-X Summit Feature
Some graphics cards have the necessary hardware to implement and utilize Summit's DualView feature to its fullest. The card specification to look for is what Matrox calls "DualHead," and ATI calls VE, and so on. Basically the card requires two CRTCs to drive the two monitors and which can be configured to display any portion of the output buffer. This feature is not dual head in the classic sense of two independent graphics heads on the same graphics card. The DualView feature requires only one graphics head (chip), rendering into the output buffer with the two configurable monitor output ports.

DualView is highly flexible - and configurable on-the-fly using another Summit feature - the Graphical Setup. Below are some, and only some, of the configurations that can be used.
The Basic Case
This simple case of DualView configuration is to have each monitor display the same image. Not a lot of innovation here.
Single Logical Screen - Side-by-side
DualView allows the second monitor to be used as a horizontal extension of the computer's desktop real estate. This treats the combination as one single display area. Images can be dragged between the two displays. This capability is sometimes incorrectly called "dual head."
Single Logical Screen - Stacked
DualView allows the second monitor to be used as a vertical extension of the computer's desktop real estate. This treats the combination as one tall single display area. Images can be dragged between the two displays. This capability is also sometimes incorrectly called "dual head."
Zoom View
When DualView is configured in Zoom Mode, a selected piece of the image on one display can be shown enlarged on the other display.   An area to be enlarged is selected by the cursor on the high resolution display. The selection is displayed on the display set to a low resolution. The difference in resolutions between the two displays provides the magnification.
Drag Video Window
Summit Video Window can be displayed on either display and dragged across the boundary when the two displays are configured in the Single Logical Screen Mode. Who sez you can't watch a ball game and get work done at the same time?