I'm very tempted to offer my sapphire 6950 2gb. It's an awesome card, but because I'm in college and I have this laptop, it doesn't see much use.
This is it
It's one of the earlier ones that had a very high success rate for unlocking the shaders.
As you can see of almost 200 reviews, it has 5 stars. PM me an offer if you are interested. I'm hesitant to let it go, but I need money so bad right now it's not funny.