Asus Maximus III Extreme - Manual (Page 168)

5-4 Chapter 5: Multiple GPU technology support
Enabling CrossFireX settings
1. In the Catalyst Control Center
window, click
Graphics Settings >
CrossFireX > Configure.
2. From the Graphics Adapter list,
select the graphics card to act as
the display GPU.
3. Select Enable CrossFireX.
4. Click Apply, and then click OK to
exit the window.
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