Donanimhaber is renowned for getting hold of official documents and picture before launch and posting it early. This time they managed to get hold of the official benchmark data compiled by AMD for its range of upcoming RV770 based graphics cards.
Results of the AMD RV770 XT show it beating NVIDIA's GeForce 9800 GTX rather convincingly across the board and the lower-end AMD RV770 PRO beating NVIDIA's GeForce 8800GT in a similar fashion.
We will have our full independent review out of the new GPU's when they are officially released later this month.
If you cannot wait until then head on over to this forum thread for all the marketing numbers.