But you can get the 2GB version.
As new games Cross 1GB of available VRAM on 1080p Ultra.
I second that, BF3 already uses more than 1GB on ultra. So can Skyrim with lots of mods. IL-2: Cliffs of Dover can even use 2GB+ (but that's a result of terrible optimization). And no, an Ivy Bridge i3 will not bottleneck that card.