SLI Bridge connects the graphics cards. This is also possible for high-end cards , though not recommended. This is where SLI Bridge is useful because it reduces the bandwidth constraints and can transfer data directly between the cards. While the two-GPU setup is likely the most popular one, SLI can also be configured in a three or four GPU dynamic by either using a single bridge that connects every card or by combining two two-way bridges.
The future is uncertain for these layouts as NVIDIA is phasing out its support for more than two-card combinations due to high driver complexity. A very powerful and reliable Power Supply Unit is necessary as the GPUs are big power consumers and you will be running two or more simultaneously. High-end graphics cards can use up to watts of power so be aware of this as well. Important: Not all games and applications support SLI.
To achieve this, the frame is split on a horizontal line, depending on geometry. For example, if the upper part of the screen is only rendering the sky, then this line will be lower in order to balance out the geometry workload on the GPUs. In practice, this is usually executed by one card working on odd frames, and the other on even frames. Although AFR might have a better frame rate than SFR, it can cause micro stuttering , which changes the way frame rate is perceived.
While the frequency at which frames arrive may be doubled, the production time of the frames is not, so this cannot reduce the input lag. If you would like to reference this page or cite this definition, you can use the green citation links above.
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