Any facts on this? I'm sure not, because there isn't a GCN 2.0 on the market yet. The HD 7790 running on GCN 2.0 is/was purely a missconception, it was never something official from AMD, more like an slightly improved GCN 1.0, even AnandTech named it GCN 1.1 and that was made up. This was said over and over in this thread, but some people yet struggle to understand it... The new R-series cards will be the first official cards from AMD that will run GCN 2.0 and it is confirmed from AMD themselves.