On these designs, the GPU controlling the display must be selected during boot time. On certain designs, using a display multiplexer allows switching the display ownership between the integrated GPU and the discrete GPU. ![]() Copying over each displayable surface introduces a performance and latency overhead.Display-specific features available on discrete GPU (like NVIDIA® G-SYNC®, higher refresh rates) may not be available on the laptop display even though the discrete GPU can support them.There are two characteristics to this approach: The discrete GPU usually renders 3D content for applications requiring 3D acceleration, which is then copied back to the integrated GPU and composited before being displayed eventually by the integrated GPU. On the MSHybrid integrated GPU + discrete GPU systems, the display is usually driven by the integrated GPU.
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