Anno 2070 uses a development of the Anno 1404 engine which includes DirectX 11 support.
We used the very high quality mode on offer in the game and then, at 1920x1080, we pushed anistropic filtering and post processing to a max to make them very resource hungry. We carry out a movement on a map and measure performance with fraps.
With its latest drivers, Nvidia has gradually gained on the Radeons which previously had a significant advantage in maximum quality mode. The Radeon HD 6990 performs very poorly here, which seems to be due to its very high energy consumption, pushing PowerTune to reduce the clock of its GPUs.