There has been a lot of talk about Nvidia's soon-to-appear 177.39 driver. Nvidia is currently in beta stage with this driver and the driver is being WHQL'd as we speak.
This beta driver is the first one to bring the PhysX on Geforce GPU and this will improve at least two benchmarks, 3Dmark Vantage, a next-generation benchmark that doesn't support next-generation DirectX 10.1 and Unreal Tournament 3.
If you use this driver and have the Geforce 8 or Geforce 9 product, including the Geforce 200 series, you will gain some performance in Vantage and Unreal tournament 3.
Some people call it cheating, but we dare to call it a feature, as the Geforce user won't have to pay for it and it will run your games faster. We don't understand why people are against free performance.
ATI, on the other hand, is trying to make a big deal out of it, as its pride doesn't let it embrace Cuda and PhysX, as Nvidia's VP told Fudzilla on the record that ATI can do it if it wants to.