I cannot use the words i wanna
"Nvidia sux with frostbitE " Theroyetically we are speaking those might be my words, but if i hammer sumthing to much i just feel like a fanboy. Just google any Nvidia card you are looking at + Battlefield crash , ATI is on the box for a reason.
Stay away from Sapphire, there cards are dire now totally. I have a MSI card, it handles the things i do to it pretty well. RAM you need to look at least at 16gb or you will bottleneck the 64bit app if you dont work on windows before u play (ill be updatin a guide on this soon) All the best in your consumer decision. High end ATI , throw money at them , what could go wrong.