Intel’s Broadwell-K Launching at End of 2014 According to New Roadmap

[Captain_Tom]

GTX 680 was a crazy launch for nVidia faster, "green", quieter and cheaper. 

That lasted for about a few months.  Then AMD boosted their drivers and it was history.  Also even when the 680 launched, if you overclocked both they traded blows.  It was common knowledge...