Radeon HD 4870 launched, reviews ahoy
Summarizing the Radeon HD 4850’s and Radeon HD 4870’s performance, thankfully, is quite easy. The Radeon HD 4850 is generally faster than the GeForce 9800 GTX and right on-par with or somewhat faster than the upcoming GeForce 9800 GTX+ in most applications. The Radeon HD 4870, however, is definitely a step up from the GeForce 9800 GTX+ and actually compares favorably to the $100 more expensive GeForce GTX 260. In fact, the Radeon HD 4870 was able to slightly outperform the GeForce GTX 260 in a couple of tests, including ET:QW and UT3.