Acer has launched what it claims is the first 2-in-1 notebook with dGPU to feature a fanless design. The company utilizes what it is calling Dual LiquidLoop technology to keep its Nvidia MX150 dGPU sufficiently cool.
https://www.notebookcheck.net/The-Acer-Switch-7-is-the-first-fanless-2-in-1-with-an-MX150-dGPU.245838.0.html