Gigabyte GA-Z77X-D3H Manual - Page 19
Setting up AMD CrossFireX™/NVIDIA SLI Configuration, NVIDIA SLI Configuration - power supply
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1-6 Setting up AMD CrossFireX™/NVIDIA SLI Configuration A. System Requirements -- Windows 7, XP operating system -- A CrossFireX/SLI-supported motherboard with two PCI Express x16 slots and correct driver -- Two CrossFireX/SLI-ready graphics cards of identical brand and chip and correct driver -- CrossFireX(Note)/SLI bridge connectors -- 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 CrossFireX/SLI graphics cards on the PCIEX16 and PCIEX8 slots. Step 2: Insert the CrossFireX(Note)/SLI bridge connectors in the CrossFireX/SLI gold edge connectors on top of the cards. Step 3: Plug the display cable into the graphics card on the PCIEX16 slot. C. Configuring the Graphics Card Driver C-1. To Enable CrossFireX Function After installing the graphics card driver in the operating system, go to the Catalyst Control Center. Browse to Performance\AMD CrossFireX Configurations and ensure the Enable CrossFireX™ check box is selected and click Apply. C-2. To Enable SLI Function After installing the graphics card driver in the operating system, go to the NVIDIA Control Panel. Browse to the Set SLI and Physx Configuration screen and ensure Maximize 3D performance is enabled. (Note) The bridge connector(s) may be needed or not depending on your graphics cards. Procedure and driver screen for enabling CrossFireX/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 CrossFireX/SLI technology. - 19 - Hardware Installation