Reports about R650, R670 or R680 GPUs from AMD/ATI were are wrong, FUD Zilla reports. They claim ATI did make some presentations about those chips but this was solely to catch the mole who is leaking all this info:
Our friends at VR zone mentioned R680 and our sources close to ATI confirmed that there is no such card. ATI did make some presentation to catch who is leaking the infos with false chip that includes R650, R670 and now even R680, just to catch who is leaking the stuff.
Someone was telling things to Nvidia and Intel, among others and the company was not that happy about it.