OP you could have gotten an MSI one for $245
Unlocked 6950 can also overclock, there is nothing wrong.
Eyefiniity, 3 monitors? The OP dosen't have 3 monitors so your point is moot.
I was acurate on the GTX 570 > AMD 6950. The poster wanted to choose between AMD 6950 unlocked, GTX 570, or AMD 6970. I advised him go either GTX 570 or AMD 6970.
He could unlock the AMD 6950 to give close comparison, but could get better performance with other two and then over clock it for even more, that's all.