"AMD's ATI Radeon HD 4800 series was successful for AMD, despite many people's worries about AMD's acquisition of ATI and its new "Sweet Spot" strategy. Suffice it to say, those worries were misplaced, as the Radeon HD 4870 512MB competed well for its price point and was eventually upgraded to 1GB of GDDR5 and pulled ahead of the competition at the same price. The Radeon HD 4870 X2 came along after that, and while it was power hungry, it became a powerhouse in shader performance. Finally, ATI improved upon the initial Radeon HD 4870 GPU further by actually going in and tweaking circuit pathways to improve clock rates, making the Radeon HD 4890 capable of hitting 1GHz+ GPU frequencies. While those cards kept the hardcore enthusiasts happy, the more money conscious enthusiast gamers out there found solace in the Radeon HD 4850 and eventually the newer Radeon HD 4770 which introduced AMD's first 40nm GPU. "
Earned a "Gold" Editors Choice Award.