I have 450GTS
3core 2.60ghz
4GB DDR2
I can play in high setting with DOF without issue and without lag in the city the only type of lag i get in the city is when you first start the game then it stop. There a few lag here and there but that a issue sense i played beta1.

I hope SE fix this i don't think getting a SSD is even worth the money just to fix this issue.