NVIDIA has just rolled-out a brand-new beta driver, versioned 326.19. Overall, this release is rather modest in comparison to some that we’ve seen, but if you happen to play DiRT: Showdown or F1 2012, some serious performance gains can be seen. Further, if you happen to be one of the incredibly lucky folks that will be picking up an ASUS PQ321Q 4K monitor, NVIDIA touts official support for it here. Also on the 4K front, support has been added for tiled displays.
While general performance improvements all-around are typical of any new GPU driver release, NVIDIA focuses on mentioning the games where the biggest gains will be seen:
You can grab the driver right here.