Nvidia FX1300 - Quadro FX 128MB Dual DVI-I PCIe Video Card, User Manual

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NVIDIA Corporation 162
Chapter 8
Using NVIDIA SLI Technology
Using NVIDIA SLI Technology
This section explains how to use the following SLI features:
• SLI Frame Rendering
• SLI Antialiasing Mode
• SLI Single ‐ GPU Mode
• Using the 3D App Profiles
• Viewing Load Balancing
SLI Frame Rendering
SLI frame rendering accelerates OpenGL operation in two different ways:
• Split frame rendering : In split ‐ frame rendering (SFR), the display is split into
distinct sections, and each section is sent to a different GPU. The resulting
rendering is recomposed and displayed as a single contiguous frame. The position
of the split is adjusted dynamically as the workload moves between the GPUs. SFR
typically benefits pixel ‐ shader or texture ‐ intensive operations
• Alternate frame rendering : In alternate frame rendering (AFR), each GPU renders
alternate frames of data from the application. AFR typically benefits geometry ‐
intensive operations
To use SLI frame rendering, perform the following steps:
1 Open the Performance & Quality Settings page.
2 From the Active profile list, select Global driver settings.
3 From the Global driver settings View list, select Advanced settings .
4 From the Global driver settings list box, select SLI rendering .
5 Click the When SLI is enabled, use list arrow, click one of the following SLI
rendering modes, then click Apply :
• Split frame rendering
• Alternate frame rendering
• Alternate frame rendering 2
Alternate frame rendering 2 is an alternate version of AFR that may provide
better performance than AFR 1 on some applications
QuadroGuide_.book Page 162 Thursday, July 27, 2006 6:48 PM