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.
Firing up Far Cry 2, we've got our first game in which we have a minimum to deal with. You can clearly see that the HD 5870 and Eyefinity6 cards both score the same, but more importantly the minimum we're seeing is a good chunk below that 30 FPS area we want to see.
The HD 5970 on the other hand offers us a minimum of 38 FPS which is fantastic. More importantly, though, it's the difference between the game being playable at this resolution and not.