A few weeks ago AMD and their partners began refreshing the models in the low end of the Radeon product stack with the http://www.hardwareheaven.com/reviews/1150/pg1/amd-radeon-hd-6450-graphics-card-review-introduction.html" target="_blank" style="color: #000000;">6450, a model which was designed for those who wanted something a little more powerful than integrated graphics but at a low price point. That meant in terms of 6000 series products we had a hole between the 6450 and the 6790 that was still filled by 5000 series products.