Hello guys I have a simple question right now, I own a GTX 680 and I just got an offer by someone asking me that he is willling to trade his AMD 6990 for my GTX 680 and I just want to know if its worth it, I want no fanboyism guys please and thanks. I have also seen some benchmarks where the 680 performs up to 2-10 % better then 6990. Should I keep my 680 or Not. I realized the 680 compute performance is horrible also.