Since no one here @ the dell community could answer, I checked out spiceworks - community.spiceworks.com/.../363855-dell-poweredge-850-video-card-drivers
I have everything else working on my PE850 just fine, just stuck with standard vga adapter for video card drivers. I see the card is a XGI Volari Z7, however i am not able to find applicable drivers for this OS. Anyone had any luck with them, & if so which driver version did you use & where did you get it from?  Thanks!
PE850, Win7x64 or 2008r2 & video card driver 