Mafia II is a third-person action-adventure video game, the sequel to Mafia: The City of Lost Heaven. It is developed by 2K Czech, previously known as Illusion Softworks, and is published by 2K Games. The game is set from 1943 to 1951 in Empire Bay (the name is a reference to New York's state nickname "The Empire State"), a fictional city based on San Francisco and New York City, with influences from Chicago and Detroit. The game features a completely open-ended game map of 10 square miles. No restrictions are included from the start of the game. There are around 50 vehicles in the game, as well as licensed music from the era.
While across the board the only card we see get an average above 60 FPS at any resolution is the GTS 460, the GTS 450 with the updated driver get's close like the HD 5770 at 1680 x 1050. The benchmark itself is actually quite intensive, though, so really, you could probably get away without having to change in game settings. If you did, though, only a small drop would be needed.