I'm looking forward to buying one of these as a replacement for my GTX 580, if performance is really good. And I'm happy that they put so much memory on the card. Sure, right now it's not needed. But I want to keep this card a few years. 2 GB would not be enough IMHO, it's one of the reasons why I did not want a 680. Look at Crysis 3. In a video with one of the developers he shows a scene and says: this is 2.5 GB of textures. So while 6GB is maybe a bit overkill for now, I think the card should at least have 4 GB. Nvidia mostly sellling 2GB cards is only holding back progress. If all cards had 4 GB, I'm sure it would be used by now.