Hello, I use a Nvidia geForce4 ti4400 processor based card with 128Mb RAM. I have 41.xx drivers with it, with hacking of the driver to behave like Quadro 750 XL !! OPEN GL works fine, but i can't be used with max details, or i need 5 minutes to refresh the four screens of Vue when moving anything on one screen ! (i have a Athlon 1600 XP processor !). So what i'm doing is using Mesh view in all the windows, with the detail cursor slightly decreased from the max value. But the small preview window (thanks to Open GL) is very usefull to see how light is on the scene for example. Hope this will help you !