I actually gained quite a bit of performance, but they came at the cost of severe system instability problems that were not there with the 12.90's installed. It's kind of strange, actually, because I've never had these problems with nVidia drivers, even their leaked "beta" versions. Dunno what the deal is but I've heard of a LOT of problems with these new drivers. Who knows? Back to the 12.90's for me (all is better since the change, by the way).