No, I just check Device Manager to see what driver version is currently installed.

'you mean to the device manager and update the graphics?' 'do I need the Intel Driver Support Assistant installed at all?' That is actually up to you, many customers prefer to update the drivers manually others prefer to use the tool, but as long as you keep checking the website from the OEM for updates on drivers that are done normally every few months you can always uninstall the Intel® Driver Support Assistant and keep updating the drivers manually. The Intel® drivers are generic, meaning they might or might not work with your specific platform. In reference to this scenario, you mentioned 'It also prompts me that if I have an OEM driver installed (like from Dell), then to use that instead', that is correct, we always recommend to install the drivers provided by the manufacturer of the computer, since that driver was customized by them to work with your specific platform, that should be the proper driver for your system. Gregbrikitis, Thank you for posting in the Intel® Communities Support.

Intel assistant driver update