Driver for quadro FX 4500

Hi guys, I have a quadro FX 4500 on a Power mac G5 dual 2.3. Does it need driver upgrade? Is not like on a windows enviroment that you need to upgrade driver once an a while? I was on a nVidia site but i couldn´t find any driver for Mac.
So that card would never have any kind of upgrade?
Thanks a lot!