DiRT 2
This excellent new racer packs a nicely scriptable performance test. We tested at the game's "high" quality presets with 4X antialiasing.

I'm growing tired of watching the GPU bottleneck take over, but I know some of you want to see all of these results. Generally speaking, this game makes good use of at least four cores (or threads), and the non-Clarkdale dual-cores cluster at the bottom of the charts. The Athlon II X4 and Core i3 processors maintain a pretty close parity here, although the Athlon IIs have a slight advantage.