Gigabyte GA-MA790GP-DS4H Manual - Page 21

Configuring an ATI CrossFireX, System

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1-7 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 CrossFire X, 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-I 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 ATI CATALYST Control Center . From the ATI CATALYST Control Center , enter the CrossFire menu and select the Enable CrossFire checkbox to complete the configuration. - 21 - Hardware Installation

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Hardware Installation
- 21 -
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 ATI CATALYST Control Center. From the ATI CATA-
LYST Control 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-I port on the graphics
card on the PCIEX16_1 slot (or connect your D-Sub monitor via a
DVI-to-D-Sub adapter).
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 CrossFire X, 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.)
1-7
Configuring an ATI CrossFireX
TM
System