You may want to check how much cache you have. Windows manages this on its own unless you go in and change it...it might not hurt to bump it up a bit

Your machine kicks my lil 850mz athalon all over the map If I can run this game you should have no problems

PS. The latest drivers may not be the best; I loaded the 43.85 drivers from NVIDIA and they were bad for running the game (on my machine); I swapped back to the 30.82 drivers and everything runs just fine