I don't mean to attack you Inzone, but I've seen this posted enough that its bugging me.
The only difference you will see is if you go past 1080p , then the extra 1gb of ram will be needed
Did you read the supplied link?http://www.guru3d.com/article/radeon-hd-6950-1gb-vs-geforce-gtx-560-ti-review/18
So first off, did you guys check the difference in-between the 1GB and 2GB 6950 versions as well, yeah ... the results are nearly NIL. The added benefit of an extra full GB is excruciatingly hard to measure, even with all games setup with the best image quality settings, hefty shaders and massive textures.