![]() ![]() But again, that's true of the built-in display as well. The TB16 dock taps into the GPU outputs wired to the system's USB-C/TB3 output. There are some systems like the Precision 7000 Series models that have a BIOS option allowing you to choose which GPU controls the built-in display and the display outputs, but those systems have a more complex motherboard design that allows them to offer that flexibility. ![]() It's also why you can't have the NVIDIA GPU directly control external displays, because this is a hardware wiring design issue. ![]() And this is why you can't completely disable the Intel GPU without losing video output. This technology is called NVIDIA Optimus. Instead, it operates as a render-only device when needed, passing completed video frames to the Intel GPU for output to displays. On both systems, the discrete GPU is not directly wired to any display output, not even the one for the built-in display. The Precision 5500 Series systems are the sister systems of the XPS 15 models. ![]()
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