This is a recommended driver update for the Windows 8.1 Preview and includes performance increases for several games.

New in GeForce R326 Drivers

Performance Boost – Increases performance by up to 19% for GeForce 400/500/600/700 series GPUs in several PC games vs. GeForce 320.49 WHQL-certified drivers. Results will vary depending on your GPU and system configuration. Here is one example of measured gains:

GeForce GTX 770:
Up to 15% in Dirt: Showdown
Up to 6% in Tomb Raider

GeForce GTX 770 SLI:
Up to 19% in Dirt: Showdown
Up to 11% in F1 2012

SLI Technology
Added SLI profile for Spinter Cell: Blacklist
Added SLI profile for Batman: Arkham Origins

Additional Details

Adds support for tiled 4K displays.
Installs PhysX System Software 9.13.0604.
Installs HD Audio v1.3.26.4
Includes support for applications built using CUDA 5.5 or earlier version of the CUDA Toolkit. More information at http://developer.nvidia.com/cuda-toolkit
Supports OpenGL 4.3 for GeForce 400-series and later GPUs.
Supports DisplayPort 1.2 for GeForce GTX 600 series GPUs.
Supports multiple languages and APIs for GPU computing: CUDA C, CUDA C++, CUDA Fortran, OpenCL, DirectCompute, and Microsoft C++ AMP.
Supports single GPU and NVIDIA SLI technology on DirectX 9, DirectX 10, DirectX 11, and OpenGL, including 3-way SLI, Quad SLI, and SLI support on SLI-certified Intel and AMD motherboards.