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According to Engadgets ............the evergreen revolution has arrived, right on schedule and with the promised DirectX 11 and Eyefinity in tow. AMD's new flagship graphics part, formerly known under the Cypress codename, is built on a 40nm process, sports an appropriately inflated 850MHz engine clock speed, 1600 stream processors, 153.6GBps memory bandwidth, over two billion transistors, and the freshly minted HD 5870 moniker. There'll be a HD 5850 as well, which makes do with a 725MHz core clock, 1440 stream processors and slightly slower (or is it just less fast?) GDDR5 memory as well, but only the headline device has been made available to reviewers, so let's see what they thought.
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HardOCP whipped out their special Gold Award for the ocassion, noting that it "doubles performance, yet remains within the same power envelope." The Tech Report crew agreed wholeheartedly, commending the "admirably low" power draw, noise levels and GPU temperatures. In fact, a pretty universal consensus shows that the new card spanks everything else out there in terms of performance, and makes a very compelling value proposition -- a significant feat for a card that's aimed at the usually less price-conscious enthusiast market.