Can anyone confirm this statement from another Autocad group?

"Also note: I believe since 2006-08ish windows has been using the video card for all graphics be it on the monitor or on printed output; when there is not enough horsepower on the video card then it will use an additional processor / core as a makeshift video card. You will need a full professional level video card such as an Nvidia Quadro 4000; mine struggles a little and I need the next generation Nvidia Quadro K4000 due to the complexity of our files (circles / pipe is challenging for video cards it seems)."

Cheers
Russell