I have looked at widescreen gaming\eyefinity, and believe 30-40FPS is not enough to consider it a viable feature for 1 card, least not the benchies I saw...and as for the extra buck for more RAM, that removes the 6950 as a price competitor for the 560Ti....!
Talk about double standards. and you think a single 560 will do better in 3d?
No, really I would like to know the answer to that.
Look at every single game, cut the framerate exactly in half then you have your answer.
For eyefinity the reduction in framerate is not linear to the increase in resolution. Blastingcap illustrated that nicely. Can't find his post right now.
I know you didn't say anything about surround. Just showing that a 560 is basically no good for 3D, surround or 3D surround. Even with 2 cards, the performance is still subpar. So those features don't count.
That leaves Physx, that's well a feature I guess.
and CUDA, AMD has APP so there is still nothing between a 6950 and a 560. I don't know why everyone is trying to find differences that are not really there.
You could just cut the crap and say you prefer nVidia, that would make things so much easier.