ASUS P9X79 WS 5-1
5.1 ATI® CrossFireX™ technology
The motherboard supports the ATI® CrossFireX™ technology that allows you to
install multi-graphics processing units (GPU) graphics cards. Follow the installation
procedures in this section.

5.1.1 Requirements

• In CrossFireX mode, you should have two identical CrossFireX-ready
graphics cards or one CrossFireX-ready dual-GPU graphics card that are
ATI® certied.
• Ensure that your graphics card driver supports the ATI CrossFireX technology.
Download the latest driver from the AMD website (www.amd.com).
• Ensure that your power supply unit (PSU) can provide at least the minimum
power required by your system.

5.1.2 Before you begin

For ATI CrossFireX to work properly, you have to uninstall all existing graphics card
drivers before installing ATI CrossFireX graphics cards to your system.
To uninstall existing graphics card drivers
1. Close all current applications.
2. For Windows XP, go to Control Panel > Add/Remove Programs.
For Windows Vista, go to Control Panel > Programs and Features.
3. Select your current graphics card driver/s.
4. For Windows XP, select Add/Remove.
For Windows Vista, select Uninstall.
5. Turn off your computer.
• We recommend that you install additional chassis fans for better thermal
environment.
• Visit the ATI Game website at http://game.amd.com for the latest certied
graphics card and the supported 3D application list.