You can install 3DMark Professional Edition from the command line.

3dmark-setup.exe [options]
Command
Description
/installpath=<install path>
Defines the install path. Avoid using Unicode characters in the install path. The default is C:\Program Files\Futuremark\3DMark
/quiet OR /silent
Silent install without displaying the user interface
/force
Force install
/install
Installs the product (Default)
/uninstall
Uninstalls the product


Running the installer with elevated permissions can cause the application to function incorrectly. Avoid running the installer with elevated permissions until prompted.