The new Turk based Radeon HD 6670 and HD 6570 are intended to replace the Redwood-based HD 5670 and HD 5570 at a price of $99 and $79 respectively.  The cards are very similar to the cards they replace so you should not expect miracles from them.  They do have reduced power draw and are both low profile cards making them a good choice for HTPCs and AnandTech is quick to point out that these are the fastest cards not requiring an external power supply on the market right now.

 

"Two weeks ago we saw the paper launch of the Radeon HD 6450, the low-end member of AMD’s Northern Islands family of GPUs. It was a solid product for HTPC use and a very notable improvement over the 5450 it replaced, but it was an uncharacteristically delayed launch for AMD. At the same time we noted that the Northern Islands family had one more GPU we had not seen: Turks."

Here are some more Graphics Card articles from around the web:

Graphics Cards