Mafia II
Mafia II hit the shelves last month and has proved to be a big hit.
We're surprised by how close a stock-clocked GeForce GTX 460 768MB is able to keep to the multi-GPU duo. Scaling in Mafia II isn't as impressive as on other titles.
Interestingly, a single GTS 450 card returns an average frame-rate of 30fps when run at 1,680x1.050 with medium-quality PhysX applied. This rises to 34.3fps with two cards - hardly a huge improvement - but the benchmark does run significantly smoother.