A system administrator installs a second identical graphics card in a workstation that performs intensive 3-D rendering. After physically installing the card and bridging the two GPUs, which of the following settings should the administrator enable in the graphics driver control panel to allow both cards to share the rendering workload and deliver optimal performance?
Increase the shared video memory
Set the onboard graphics as the primary display adapter
Disable the onboard graphics
Enable SLI or CrossFire in the driver control panel
Multi-GPU driver features-NVIDIA SLI for GeForce cards or AMD CrossFire for Radeon cards-must be enabled in the vendor's driver utility (such as the NVIDIA Control Panel or AMD Radeon Settings). Once enabled, the driver distributes rendering tasks between the GPUs, significantly improving performance in supported applications. Options such as selecting the onboard GPU or increasing shared system memory do not enable two discrete cards to work in tandem.
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Why is it important to configure shared video memory?