![]() ![]() With Alder Lake P platform, there is no more “DP-in” mechanism anymore, so the integrated TBT controller on the PCH is getting its two DisplayPort streams directly from the iGPU which sits on the same package.ĭisplays that are connected to this port will follow the same logic as the internal display: they are connected to the iGPU and are able to receive content from the dGPU via NVIDIA Optimus (MSHybrid). In some models (XMG PRO series in Late 2021) there was even a MUX switch in front of the TBT controller: the DP signal input could be switched with a BIOS option. The “DP-in” signal was able to be supplied from either the iGPU or the dGPU. These controllers had a flexible “DP-in” connection. With previous designs, the Alpine/Titan/Maple Ridge controllers were supplying the DisplayPort signals to the USB-C port. ![]() ![]() This platform architecture has one key consequence:ĭisplayPort signal in Thunderbolt 4 on ADL-P platform will always come from the iGPU ![]()
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