Recommendations on Graphics Card

Good Morning all;

We are looking to do a upgrade on our Graphics Cards here. We haveDell690s with Professional X64. We not only have SW08, but Composerand Formateworks on the computers. Are files are very largeassemblies.

What would you recommend at the high end on Graphic Cards by eitherNviadia or ATI?

Thank you for imputs

ThomasSolidworksGeneral