Far Cry 2
The Dunia Engine was built specifically for Far Cry 2 by the award-winning Ubisoft Montreal development team. It delivers the most realistic destructible environments, amazing special effects such as dynamic fire propagation and storm effects, real-time night-and-day cycle, dynamic music system, non-scripted enemy A.I. and so much more.
HD 6970 - Performance seems to have fallen back just a small amount.
HD 6870 - Here we see no real change.
HD 5870 - Here we see a small bump in performance at 1680 x 1050 and 1920 x 1200.