A few days ago, I installed PyTorch with GPU support on Win10 OS.
The following is the key steps:

Select the Anaconda version, I select a Python3.7 for Windows x64
Attention please: do not use the non-ANSI name for Windows!!!
In order to avoid unexpected errors, please select the official support version.
Use the conda to install pytorch with the official command line.
All the required packages will be installed automatically including the CUDA toolkit.

Now, the environment of PyTorch with a RTX GPU has been installed on Win10 successfully.
Use the following command to check the setting:



import torch
torch.version
torch.cuda.is_available()