Hardware Secrets takes a look at the Sapphire HD 4870, based on the new “RV770 XT” GPU from AMD/ATI and today’s most high-end GPU from this manufacturer. A quote from the article:

AMD/ATI has released two new high-end graphics chips recently, Radeon HD 4870 and Radeon HD 4850, known by the codenames RV770 XT and RV770 PRO, respectively. As you can guess by the numbers, HD 4870 provides a higher performance compared to HD 4850 and currently is the fastest GPU provided by AMD/ATI – until Radeon HD 4870 X2, a video card featuring two HD 4870, is launched. In this review we will benchmark HD 4870 from Sapphire and compare it to its main competitors from nVidia. Is this video card a good buy? Check it out.

>> Sapphire HD 4870 Video Card Review