How to get the GPU info?

I do not know of a direct equivalent, but lshw should give you the info you want, try:

sudo lshw -C display

(it also works without sudo but the info may be less complete/accurate)

You can also install the package lshw-gtk to get a GUI.

That type of information is non-standard, and the tools you will use to gather it vary widely.

The command glxinfo will give you all available OpenGL information for the graphics processor, including its vendor name, if the drivers are correctly installed.

To get clock speed information, there is no standard tool.

• For ATI/AMD GPUs running the old Catalyst driver, aticonfig --odgc should fetch the clock rates, and aticonfig --odgt should fetch the temperature data. I'm not familiar with AMDGPU-Pro, but a similar tool should exist.
• For NVIDIA GPUs, the nvidia-smi tool will show all of the information you could want, including clock speeds and usage statistics.

I am not aware of an equivalent tool for the open source drivers or for Intel or other GPUs, but other information on the hardware can be fetched from the lspci and lshw tools.