Left 4 Dead 2 (DirectX 9)

Settings: 1680x1050, Very High, 4xMSAA, 16x Anisotropic Filtering. Left 4 Dead 2, according to the graphs doesn't show much of a difference between the two cards, but despite the numbers shown here, it is a game I play near daily and there IS a difference. The extra boost from the HIS cards higher clocks does make a difference when you get rushed. It's slight, yes, but it's enough.

Assassin's Creed 2 (DirectX 9)

Settings: 1680x1050, Highest Available in options, 2xMSAA. Assassin's Creed 2 is a new test for us, and while the engine at first glance hasn't changed overly much to the eye, there is certainly a lot more going on on-screen than the previous game. Both cards here performed identically, both looking at the numbers and during subjective playing.