Don't get too hung up on the lists. Autodesk isn't going to certify every card. I always lead with the disclaimer that a card that has a WHQL certified driver, is certified.
You can get a WHQL certified driver for this card on nVidia.com and you'll be just fine with AutoCAD 2014. I have a few machines left in my enterprise that run this card without issues.
Its a little overkill for basic AutoCAD work, unless you are also using ReCap or other software that is heavily dependant on OpenGL.