User guide

Chapter 6
AMD CrossFireX™ Technology
Note: These features are only available for AMD Radeon HD 6990 graphics cards with
AMD CrossFireX™ connections.
AMD CrossFireX™ Overview
AMD CrossFireX is a multi-GPU (graphics processing unit) performance gaming
platform. It enables multiple graphics processors installed in a single computer to
work together to improve system performance, creating a high-performance gaming
platform. A typical AMD CrossFireX setup involves two graphics cards.
Once your graphics cards have been installed, you can enable and configure
AMD CrossFireX support using the Control Center software application. For more
information, see the AMD CrossFireX technology Web page at sites.amd.com/us/
game/technology/Pages/crossfirex.aspx.
Installing AMD CrossFireX™ Graphics Cards
These instructions assume that a PCIe® graphics card has already been successfully
installed in the secondary slot (slot one), and that the primary slot (slot zero) is empty.
Note: Consult your system builder or OEM to ensure that your system has an
adequate power supply.
For an up-to-date listing of AMD CrossFire™ certified motherboards and power
supplies, see support.amd.com/us/certified/Pages/certified-components.aspx.
1. Make sure the computer, monitor, and other peripheral devices are off.
2. Unplug the computer power cord and disconnect the monitor cable from the
back panel of the computer.
Caution:
To avoid possible damage to the motherboard, wait approximately 20 seconds
after unplugging the power cord before disconnecting a peripheral or
removing a component from the motherboard.
3. Remove the computer cover.
If necessary, consult the computer manual for help removing the cover.
©
2011 Advanced Micro Devices, Inc. AMD Radeon™ HD 6990