And your streaming? wow...anyways, you will experience lower frame rates. You may modify the high settings a bit lower probably using a combination of medium and high settings and I think you'll be okay.
Yes, but I am not too worried about streaming Starcraft 2 and the streaming I am fine with medium and a few modified's with it ^_^ so medium is perfect for me. What sort of frames would I get with a soild medium and BF3? Just a guess or experience such as an equal card.