Depending on where you look at current benchmarks. The 7950's are great performers now with their newest driver updates. They overclock well from everything I've read and heard.
If you have any intent on updating to 2560x1600 res then I would say the 3gb of memory definitely helps and the 7950 gets my recommendation. Max Payne 3 is a game that can and will use more memory. Crysis 3 also looms around so we'll have to see how that goes.http://www.newegg.com/Product/Product.aspx?Item=N82E16814161407
Is the card I would buy if I were building another computer at this moment. It is also of the blower style fan cooling which I like. Cheers and Good Luck.