ATI Technologies RADEON X1550 SERIES - Manual (Page 108)

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To access and enable CrossFire™ in Catalyst™ Control Center, do
the following:
• In Advanced View, click CrossFire™ and check the Enable
CrossFire™ box.
When CrossFire™ is successfully enabled, all display devices except
the one used by CrossFire™ will be disabled. Multiple monitors/
displays that are disabled when CrossFire™ is enabled reappear after
CrossFire™ is disabled.
5 How are the graphics cards connected on a CrossFire™ system?
The two cards are connection through the motherboard which is used
to convey information from one graphics card to the other graphics
card and transmit the combined signal to a display device. No
bridging cable is required.
6 Which games/applications work with CrossFire™?
CrossFire™ works with all 3D games and applications. If Catalyst™
A.I. is enabled in the Catalyst™ Control Center software, the optimal
rendering mode available for the application is automatically selected.
7 Is a driver profile required to make CrossFire™ work?
No. CrossFire™ is enabled by default for all 3D games and
applications.
8 What happens if you pair a 16-pipeline CrossFire™ Edition
graphics card with a CrossFire™ Ready 12-pipeline graphics
card?