Durango was rumoured to have 8GB DDR3 for a long time, not GDDR5. Still is. Others pointed it out to him but it looks like he didn't respond.
Take a look at his tag: 'derp' which links to this: http://www.neogaf.com/forum/showpost.php?p=57028734&postcount=3194
So..lol.
edit, actually looks like he's 'standing by his claim' http://www.neogaf.com/forum/showpost.php?p=57366358&postcount=3402