my system specs are in my sig, the oldest item is the vid card and i am thinkking about getting a new one, alternativly i can upgrade the whole system for less cost. I am thinking about getting an Nvidia 6800 ultra, would my sytem be able to use this card and would i see a big increase in frame rates. bearing in mind a new vid card would cost me more than the rest of the sytem, alternativly would i see much improvemtn by going to an XP3200 instead at about half the cost. I am not interested in an ATI card because i need something that works well in Open GL. alternativly would i see just as big an improvment with a 6800 GT or even a 6600, becuase the limiting factor is my CPU?