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.
Far Cry 2 sees more performance as we get more and more MHz. You can see the CPU limitation is very obvious at 1920 x 1200 and 1680 x 1050.