"This little performance preview is not all about the technologies and the intricacies of the game but a quick test to see what kind of performance you can expect to get with some of today's hardware from both camps. At this point, if you want eye candy and performance, you go with NVIDIA. Add in a separate card for PhysX and you see an increase in frame rate performance up to 1920x1200 on a G92 or lower end GT 200 based variant. You can get an idea of how performance measures up but as a demo, things will likely change and receive small tweaks to get the most from the game."

Mafia II Performance Preview @ OCC