Ocaholic posted Radeon HD 6990 vs R9 290X - Should I upgrade?
A quote from the article:
A gamer simply can't get enough graphics power in their rig, which makes the upgrade question omnipresent. To show you whether it makes sense to upgrade from one generation to another we created this series of articles, where we will compare graphics cards from different generations. Today we're having a close look at the differences between the HD 6990 and the R9 290X.Radeon HD 6990 vs R9 290X - Should I upgrade? @ ocaholic