The GeForce website offers new WHQL-certified GeForce 331.82 Windows drivers, which they say are optimized for Assassin's Creed IV: Black Flag. These offer additional performance boosts, as well as an updated beta of NVIDIA's ShadowPlay that can record gameplay with minimal impact on GTX 600 and 700 series GPUs, saying the CPU requirement for this has now been removed. Here's word:

The new GeForce 331.82 WHQL driver is now available to download. An essential update for all GeForce GTX users, 331.82 WHQL is the Game Ready driver for Assassin's Creed IV and Need For Speed Rivals, giving you a great gaming experience from day one with the latest driver tweaks and performance optimizations. In addition to a multitude of performance optimizations in a variety of games, 331.82 WHQL also introduces major 3840x2160 4K Gaming optimizations, giving up you up to 50% faster framerates in Battlefield 4, Crysis 3, and Metro: Last Light when playing at the demanding resolution.

GeForce 331.82 WHQL also sees the introduction of GeForce Experience 1.7.1, which includes the long-awaited ShadowPlay Beta, an innovative gameplay recording tool that can constantly record the action with a minimal performance impact thanks to the H.264 encoder built into GeForce GTX 600 and 700 Series GPUs. With GeForce Experience 1.7.1, ShadowPlay CPU requirements have been removed, opening ShadowPlay up to all GeForce GTX 600 and 700 Series users.