After its launch two weeks ago, the Radeon HD 5850 took a little while to appear in online listings, and stocks depleted quickly. Our first search for available 5850s bore no fruit, and the situation hadn't improved much when we looked again last week.
So far, things seem to be quite different with AMD's new Radeon HD 5770 and 5750 graphics cards, which hit listings last night and are still widely available. Newegg currently carries HIS, Gigabyte, and Sapphire versions of the Radeon HD 5770, all for $159.99. Only one Radeon HD 5750, a Sapphire variant with 1GB of RAM, is listed for $129.99, but it's also in stock.
These new graphics cards feature AMD's Juniper GPU, a smaller derivative of Cypress that's also DirectX 11-compatible and built on 40-nm process technology. We have both the Radeon HD 5770 and Radeon HD 5750 in our labs right now, and we'll bring you a full review soon. Stay tuned.