Setting Up Amd Crossfire ™ /Nvidia Sli Configuration - Gigabyte GA-990FXA-UD5 User Manual

1-6 Setting up AMD CrossFire
A. System Requirements
- The 2-Way CrossFire/SLI technologies currently support Windows 7 and XP operating systems
- The 3-Way CrossFire/SLI technologies currently support Windows 7 operating system
- A CrossFire/SLI-supported motherboard with two/three PCI Express x16 slots and correct driver
- Two/three CrossFire/SLI-ready graphics cards of identical brand and chip and correct driver
(Current GPUs that support 3-Way CrossFire technology include the ATI Radeon HD 3800, HD 4800, HD
5800 series, and AMD Radeon HD 6800, HD 6900, HD 7800, and HD 7900 series. Current GPUs that
support 3-Way SLI technology include the NVIDIA 8800 GTX, 8800 Ultra, 9800 GTX, GTX 260, GTX 280,
GTX 470, GTX 480, GTX 570, GTX 580, GTX 590, and GTX 600 series.)
- CrossFire /SLI bridge connectors
(Note)
- A power supply with sufficient power is recommended (Refer to the manual of your graphics cards for the
power requirement)
B. Connecting the Graphics Cards
Step 1:
Observe the steps in "1-5 Installing an Expansion Card" and install two/three graphics cards on the PCI Express
x16 slots. The following table shows the recommended configurations with two/three cards.
 Recommended 2/3-Way CrossFire/SLI Configurations:
PCIEX16_1 PCIEX16_2
2-Way
a a
3-Way
a a
Step 2:
Insert the CrossFire /SLI bridge connectors in the CrossFire/SLI gold edge connectors on top of the cards.
(Note)
Step 3:
Plug the display cable into the graphics card on the PCIEX16 slot.
C. Configuring the Graphics Card Driver
C-1. To Enable CrossFire Function
After installing the graphics card driver in the operating system, go to the
AMD VISION Engine Control Center. Browse to Performance\AMD
CrossFireX Configurations and ensure the Enable AMD CrossFireX
check box is selected. Select the GPU combination you want to use
and click Apply. (Available combination options are dependent on the
number of graphics cards.)
(Note) T he bridge connector(s) may be needed or not depending on your graphics cards.
Procedure and driver screen for enabling CrossFire/SLI technology may differ by graphics cards and
driver version. Refer to the manual that came with your graphics cards for more information about
enabling CrossFire/SLI technology.
/NVIDIA SLI Configuration
™
PCIEX8 PCIEX4_1 PCIEX4_2
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- 19 - Hardware Installation