Enabling Ati Crossfirex; Ati Crossfirex Troubleshooting; Change Motherboard Bios Settings; Use Graphics Cards With Different Amounts Of Memory - AMD ATI Radeon HD 3400 Series User Manual

Change Motherboard BIOS Settings

10. Reconnect any cables you have disconnected and plug in the computer
power cord.
11.
Turn on the monitor and then the computer.
You now need to enable ATI CrossFireX in ATI Catalyst Control Center.

Enabling ATI CrossFireX

When a ATI CrossFireX configuration is detected for the first time by the
ATI Catalyst display driver, ATI CrossFireX is automatically enabled, and the best
possible GPU combination is selected based on your hardware configuration. If
necessary, you can change the existing ATI CrossFireX configuration using the
following procedure.
1.
From the Graphics Settings tree in the ATI Catalyst Control Center software,
click CrossFire™.
2. From the Graphics Adapter list, select the graphics card that acts as the
Display GPU.
3.
Select Enable CrossFire™.
Note: If your system has more than two ATI CrossFireX graphics
cards, the Selecting a Render GPU dialog appears prompting you to
select a graphics card to partner with the Display GPU.
4.
Click Apply.
When ATI CrossFireX is enabled, GPU Accelerated Physics is automatically
disabled for all cards in the configuration as are all displays except the one used
by ATI CrossFireX.

ATI CrossFireX Troubleshooting

Change Motherboard BIOS Settings
Some motherboards may have a system BIOS option to switch between single
and dual PCIe slot support. The default setting may be single slot support. Refer
to the motherboard's manual for information to enable dual PCIe slot support.
For more information see the ATI CrossFireX Web page at
crossfire.

Use Graphics Cards with Different Amounts of Memory

In some ATI CrossFireX configurations, graphics cards with different amounts of
memory can by used; however, restarting your computer is required after
enabling ATI CrossFireX. This will cause ATI CrossFireX to reduce the amount of
memory on the card with the most amount of memory to match the memory size
of the graphics card with the least amount of memory.
Clicking OK to the memory mismatch error message will restart your computer.
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ATI Radeon HD 3400 Series
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