Gigabyte GA-MA790X-UD4P Manual - Page 19

Configuring an ATI CrossFireX, System

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1-6 Configuring an ATI CrossFireXTM System To enable CrossFireXTM technology, you need two graphics cards that support ATI CrossFireTM technology. Before You Begin-A. Power Requirements: Use a power supply that is able to provide sufficient power to fully support an CrossFireX configuration and other components in your system. We recommend a power supply that provides at least 20A 12V current. The exact power requirements depend on your overall system configurations. B. Supported Operating Systems: Windows Vista and Windows XP. C. BIOS Settings: Before configuring your system for CrossFireX, make sure to set Init Display First under Advanced BIOS Features in BIOS Setup to PEG first. (Start your system with a single PCIe x16 graphics card and then go to BIOS Setup to set Init Display First to PEG. Then install the second graphics card to enable CrossFire.) Enabling CrossFireX Mode-Connecting Two Graphics Cards: Step 1: Observe the steps in "1-5 Installing an Expansion Card" and install the graphics cards in the PCIEX16_1 slot and the PCIEX8_1 slot. Step 2: Depending on your graphics cards, install the connecting bridges on the two cards. (Note: Procedure for enabling CrossFireX may slightly differ by graphics cards. Refer to the manual that came with your graphics cards for more information about enabling CrossFireX.) Step 3: Connect your LCD monitor cable to the DVI port on the graphics card on the PCIEX16_1 slot (or connect your D-Sub monitor via a DVI-to-D-Sub adapter). Graphics Card Driver Setting: After installing the graphics card driver in your operating system, access the Catalyst Control Center. From the CATALYST Control Center, enter the CrossFire menu and select the Enable CrossFire checkbox to complete the configuration. - 19 - Hardware Installation

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Hardware Installation
- 19 -
To enable CrossFireX
TM
technology, you need two graphics cards that support ATI CrossFire
TM
technology.
Before You Begin--
A. Power Requirements:
Use a power supply that is able to provide sufficient power to fully support an CrossFireX configuration and
other components in your system. We recommend a power supply that provides at least 20A 12V current.
The exact power requirements depend on your overall system configurations.
B. Supported Operating Systems:
Windows Vista and Windows XP.
C. BIOS Settings:
Before configuring your system for CrossFireX, make sure to set
Init Display First
under
Advanced BIOS
Features
in BIOS Setup to
PEG
first. (Start your system with a single PCIe x16 graphics card and then go
to BIOS Setup to set
Init Display First
to
PEG
. Then install the second graphics card to enable CrossFire.)
1-6
Configuring an ATI CrossFireX
TM
System
Enabling CrossFireX Mode--
Connecting Two Graphics Cards:
Step 1:
Observe the steps in "1-5
Installing an Expansion Card" and install
the graphics cards in the PCIEX16_1 slot and the PCIEX8_1 slot.
Step 2:
Depending on your graphics cards, install the connecting bridges
on the two cards.
(Note: Procedure for enabling CrossFireX may slightly differ by graphics cards. Refer
to the manual that came with your graphics cards for more information about enabling
CrossFireX.)
Graphics Card Driver Setting:
After installing the graphics card driver in your operating system,
access the
Catalyst Control Center
. From the CATALYST Con-
trol Center, enter the CrossFire menu and select the
Enable
CrossFire
checkbox to complete the configuration.
Step 3:
Connect your LCD monitor cable to the DVI port on the graphics
card on the PCIEX16_1 slot (or connect your D-Sub monitor via a
DVI-to-D-Sub adapter).