TechReport offers a first look at the unreleased ATI Radeon HD 4850.

Quote: "The battle between AMD and Nvidia for the hearts, minds, and disposable income of PC enthusiasts is starting to get scrappy. First, AMD scheduled a press event to distract folks from Nvidia's GeForce GTX 200 series launch, which Nvidia subsequently pulled forward. Perhaps in retaliation, the green team then divulged plans to unleash a faster version of its GeForce 9800 GTX. This GeForce 9800 GTX+ will sell for only $229, dropping the vanilla 9800 to $199—conveniently stepping on the price point of AMD's next-gen Radeon HD 4850 graphics card.
Let it be outmaneuvered, and because cards are actually available for sale already, AMD has decided to lift the curtains on the 4850 a little early. Keep reading for our first look at AMD's new mid-range Radeon. "
More details on TechReport.