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Dxdiag has very useful data about display card information, but I couldn't find any command line to get silent output from it. I need to get the memory of user's graphic card on Windows. Is there any solution to get it via Dxdiag or other resources?

I am using Python 2.7 on Windows 8.1

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The dxdiag has the following command line options that could output information sliently,

/x outfile    Silently save XML information to <outfile> and quit. 

/t outfile    Silently save txt information to <outfile> and quit.

So, you can simply use "dxdiag /x myoutputfile" or "dxdiag /t myoutputfile"

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Thanks. I did it then I opened XML file into my project. The problem was the outfile path, because it couldn't accept space character, so I changed the current dir of python using chdir() to temp folder, then I made a bat file and wrote that command line with dxdiag. then I ran the bat file using subprocess and after creation of XML file, I loaded it into my project.
How do you read the results from Python? I tried using subprocess.check_output, but it doesn't wait for the command to complete. It seems that dxdiag detaches itself from the parent process.
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Dxdiag takes quite a while to complete (15 seconds on my setup), so it's probably not ideal to use from within code. Consider using:

  wmic path win32_VideoController get AdapterRam

That might be the information you are looking for. Additionally, you may be able to get extra information from the wmic interface.

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