User`s manual

Hardware Installation - 20 -
(Note) The bridge connectors may be needed or not depending on your graphics cards.
1-7 Setting up ATI CrossFireX
™
Conguration
A. System Requirements
- The 2-Way CrossFireX technology currently supports Windows XP, Windows Vista, and Windows 7 operating systems
- The 3-Way/4-Way CrossFireX technology currently supports Windows Vista and Windows 7 operating systems only
- A CrossFireX-supported motherboard with two/three/four PCI Express x16 slots and correct driver
- Two/three/four CrossFireX-ready graphics cards of identical brand and chip and correct driver
(Current ATI GPUs that support 3-Way/4-Way CrossFireX technology include the Radeon HD 3800 series, Radeon HD 4800
and Radeon HD 5800 series.)
- CrossFireX bridge connector(s)
(Note)
- A power supply with sufcient 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 "1-6 Installing an Expansion Card" and install two/three/four CrossFireX-ready graphics cards on the
PCI Express x16 slots. The following table shows the recommended CrossFireX congurations with two/three/four cards.
Step 2:
Insert the CrossFireX bridge connector(s)
(Note)
in the CrossFireX gold edge connectors on top of the two/three/four cards.
Step 3:
Plug the display cable into the graphics card on the PCIEX16_1 slot.
Recommended 2/3/4-Way CrossFireX Congurations:
PCIEX16_1 PCIEX16_2 PCIEX8_1 PCIEX8_2 PCIEX4_1 PCIEX4_2
a a
-- -- - - - -
a a a
-- - - - -
- -
a a a
- - - -
a a a a
- - - -
2-Way
3-Way
4-Way
C. Conguring the Graphics Card Driver
C-1. To Enable CrossFireX Function
For 2-Way CrossFireX:
A f t e r i n s t a l l i n g t h e
graphics card driver in
the operating system,
go to the Catalyst Con-
trol Center. Browse to
the CrossFireX menu
and select the Enable
CrossFireX
™
check box.
Click OK to apply.
For 3-Way CrossFireX:
Browse to the CrossFireX
menu, select the Enable
CrossFireX
™
check box,
and select the 3 GPUs
combination. Click OK to
apply.
For 4-Way CrossFireX:
Browse to the CrossFireX
menu, select the Enable
CrossFireX
™
check box,
and select the 4 GPUs
combination. Click OK to
apply.
Procedure and driver screen for enabling
CrossFireX technology may differ by graph-
ics cards. Refer to the manual that came
with your graphics cards for more informa-
tion about enabling CrossFireX technology.