http://www.guru3d.com/article/ecs-ge...lack-review/12

Guru3D got 53 FPS for the 1GB and 46 FPS for the 768MB.

Settings:
Baja Iron Route 1
8x Anti-Aliasing
16x Anisotropic Filtering
All settings maxed out

I never played Dirt 2, but is there anymore demanding levels then this?