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- 19 - Hardware Installation
(Note) The bridge connectors may be needed or not depending on your graphics cards.
1-6 Setting up ATI CrossFireX
A. System Requirements
- The 2-Way CrossFireX/SLItechnology currently supports Windows XP, Windows Vista, and Windows 7 operating systems
- The 3-Way CrossFireX/SLI technology currectly supports Windows Vista and Windows 7 operating systems only
- A CrossFireX/SLI-supported motherboard with two/three PCI Express x16 slots and correct driver
- Two/three CrossFireX/SLI-ready graphics cards of identical brand and chip and correct driver
(Current ATI GPUs that support 3-Way CrossFireX technology include the Radeon HD 3800 series, Radeon HD
4800 and Radeon HD 58XX series. Current NVIDIA GPUs that support 3-Way SLI technology include the 8800 GTX,
8800 Ultra, 9800 GTX, GTX 260 and GTX 280.)
- One/two CrossFire (Note)/SLI bridge connectors
 
B. Connecting the Graphics Cards
Step 1:
Observe the steps in "1-5 Installing an Expansion Card" and install two/three CrossFireX/SLI graphics cards on the PCI

PCIEX16_2 slots.)
Step 2:
Insert the CrossFire (Note)/SLI bridge connector(s) in the CrossFireX/SLI gold edge connectors on top of the two/three cards.
Step 3:
Plug the display cable into the graphics card on the PCIEX16_1 slot.

C-1. To Enable CrossFireX Function
For 2-Way CrossFireX:
After installing the
graphics card driver in
the operating system, go
to the Catalyst Control
Center. Browse to the
CrossFireX menu and
select the Enable
CrossFireX check box.
Click OK to apply.
For 3-Way CrossFireX:
After installing the graph-
ics car d d riv er in t he
operating system, go to
the Catalyst C o n trol
Center. Browse to the
CrossFireX menu, select
the Enable CrossFireX
check box, and select the
3 GPUs combination.
Click OK to apply.
Procedure and driver screen for enabling CrossFireX/SLI technology may differ by graphics cards.
Refer to the manual that came with your graphics cards for more information about enabling Cross-
FireX technology.
For 2-Way/3-Way SLI:
After installing the graphics card driver in the operating system, go to the NVIDIA Control
Panel. Browse to the  screen and ensure the SLI con-
 and Physx is enabled.
C-2. To Enable SLI Function
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