The first tests, in the article done by Anh, were using one HD 2900 XT and a 8800 GTS. The second article, done by Sven, was using a different HD 2900 XT, a HD 2900 XTX and an 8800 GTS. I told them to use similar test hardware (it's as close as they could get), but each did their own Oblivion...