I'd like to lower the clock of the GPU in my server. I have the GT420 installed, a small GPU with an even smaller radiator, which is noticeably turning even when no screen is connected. To deal wth this, I'd like to lower the clock speed or even deactivate the card entirely while no screen is connected. I've installed the appropriate NVidia driver already, but I find it hard to apply existing tutorials on how to do this, so help would be appreciated.
cron @reboot
, Startup Applications,rc.local
, etc.