550$ is just too much for 2GB. All that cores might pack a lot of horsepower but 2GB is not going to be enough for very high resolutions. Nvidia really made a mistake, unless they want to force enthusiasts to first buy a 2GB version and then a 3 or 4GB version.

Anyway, 2GB will be enough for 1080 screens. This card will blow minds at 1080.