Economically speaking, buying another 4870 or selling mine and getting 5850, it would cost me exactly the same. Am I correct, if not I will definitely go for the cheaper option ?
@abby - am not at all concerned about power consumption idle/load, or noise levels etc, only thing I want is raw frames per second.
Already have a Corsair Tx850, Asus CF mobo, personally I was leaning towards CF. But if dx11 matters, and CF can give me problems, then I'll go for 5850.