The GeForce website now offers new version 327.23 WHQL-certified drivers for NVIDIA graphics cards running under Windows Vista, Windows 7, and Windows 8.x. Here's word on what they provide in addition to performance improvements over the 320.49 drivers: "This Game Ready WHQL driver ensures you’ll have the best possible gaming experience and is also a recommended driver update for the Windows 8.1 Preview. GeForce R326 drivers also provide performance increases for a variety of different games."