Introducing AMD’s “Turks” – HD 6670 and HD 6570
Grand Theft Auto IV
Grand Theft Auto IV (GTA IV) is a sandbox-style action-adventure video game released by Rockstar in late 2008. It is the sixth game in the Grand Theft Auto series. Two episodic expansion packs have since been released since then as late as April of this year.
The game is set in Liberty City, a fictional city based heavily on modern day New York City. It follows Niko Bellic, a war veteran from Eastern Europe. He comes to the United States in search of the American Dream and enters a world of organized crime, gangs and corruption. GTA IV is mostly composed of elements from driving games and third-person shooters which features free-roaming gameplay. It features an online multiplayer mode, the first of the GTA series to do so. 
Here are the settings that we used. The HD 6570 nearly ran out of resources at 1680×1050 and we had to move the texture setting down from high to medium.
First we tested at 1920×1200 resolution.
Now we test at 1920×1200. We had to move the texture settings to medium to even benchmark the HD 6570.
This benchmark appears to be at the very least, highly CPU-limited at 1920×1200. In GTA-IV, the GTS 450 wins over the HD 6670.
great review mark! Huge piles of data, thats what i love about the abt. I totally agree with your conclusion which is spot on. Given the gts450 and hd5770 may not be around for much longer these cards should be a great option in the future but for now there are some really nice price/performance options in the same bracket and they just dont shine through them. In time they may fall in place when some of these killer deals from the last generation slowly slip out of the picture.