Anyway a good article talking about GDDR5 being used in next console / other general markets and not just graphcis... the article is old... 2008.
http://theovalich.wordpress.com/2008/11/22/100th-story-gddr5-analysis-or-why-gddr5-will-rule-the-world/
The tech was created by ATI and after 2006 by AMD for these purpose.