ATI and Nvidia are trying to confuse people as much as they can with their codenames. GT300 and RV870 are not entirely valid codenames as both Nvidia and ATI changed the way how they call their next generation chips simply to try to preserve the information about upcoming plans.

We have learned that Evergreen is the codename for the the entire DirectX 11 generation and you can expect at least for chips for desktops including entry level, mainstream, performance and high end but at this time, we don’t have much more details on them.

The one that we call RV870, the performance part, should be launching around Windows 7 release date (October 22nd) if not even earlier.