This is the first beta driver from the R304 family of drivers.

New in R304 Drivers:
Performance Boost – Increases performance for GeForce 400/500/600 Series GPUs in several PC games vs. GeForce 301.42 WHQL-certified drivers. Results will vary depending on your GPU and system configuration:
GeForce GTX 680:
Up to 18% in Batman: Arkham City
Up to 15% in Dragon Age II
Up to 10% in S.T.A.L.K.E.R.: Call of Pripyat
Up to 60% in Total War: Shogun 2 (fixes performance issue with latest game patch)
GeForce GTX 560:
Up to 14% in Batman: Arkham City
Up to 5% in Battlefield 3 with SLI
Up to 4% in Dragon Age II
Up to 8% in The Witcher 2: Assassins of Kings with SLI
Up to 7% in Lost Planet 2
Key Fixes
Fixes an intermittent vsync stuttering issue with GeForce GTX 600-series GPUs.
Fixes an issue where some manufacturer's factory overclocked cards default to and run at lower clocks.
Fixes a performance issue in Total War: Shogun 2 with the latest game patch.
NVIDIA SLI Technology – Adds or updates the following SLI profiles:
Spec Ops: The Line
PlanetSide 2
F1 2011 – updated profile
Final Fantasy XIV – updated profile
Saints Row: The Third – updated profile
Torchlight II
Tribes: Ascend
NVIDIA 3D Vision – Adds or updates the following 3D Vision profiles:
Alan Wake's American Nightmare – rated Poor
Borderlands 2 – updated profile with new convergence settings
Depth Hunter – updated rating to 3D Vision Ready
Mass Effect 3 – updated in-game compatibility message and profile to be more compatible with community 3D mods
Max Payne 3 – updated rating to Excellent and updated in-game compatibility message to inform users to use DirectX 11, disable MSAA and use SSA0.
Street Fighter X Tekken – rated 3D Vision Ready
Tiger Woods PGA 12: The Masters – rated Good
Tribes: Ascend – rated Fair
The Walking Dead – rating Good
Other Profile Updates
Added NVIDIA Control Panel antialiasing support for Diablo III
Added NVIDIA Control Panel antialiasing support for L.A. Noire
Added NVIDIA Control Panel antialiasing support for Rayman Origins
Added NVIDIA Control Panel antialiasing support The Secret World
Added NVIDIA Control Panel ambient occlusion support for Star Wars: The Old Republic
Disabled FXAA for several Windows programs like Media Player and Movie Maker.
NVIDIA Surround
Surround settings now persisted after new driver overinstall.
NVIDIA CUDA
Includes support for applications built using CUDA 5 Preview or earlier version of the CUDA Toolkit.

Additional Details
Installs PhysX System Software v9.12.0604.
Installs HD Audio v1.3.17.0.
Supports OpenGL 4.2
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.

GeForce 600 series:
GTX 690, GTX 680, GTX 670, GT 645, GT 640, GT 630, GT 620, GT 610, 605

GeForce 500 series:
GTX 590, GTX 580, GTX 570, GTX 560 Ti, GTX 560 SE, GTX 560, GTX 555, GTX 550 Ti, GT 545, GT 530, GT 520, 510

GeForce 400 series:
GTX 480, GTX 470, GTX 465, GTX 460 v2, GTX 460 SE v2, GTX 460 SE, GTX 460, GTS 450, GT 440, GT 430, GT 420, 405

GeForce 300 series:
GT 340, GT 330, GT 320, 315, 310

GeForce 200 series:
GTX 295, GTX 285, GTX 280, GTX 275, GTX 260, GTS 250, GTS 240, GT 240, GT 230, GT 220, G210, 210, 205

GeForce 100 series:
GT 140, GT 130, GT 120, G 100

GeForce 9 series:
9800 GX2, 9800 GTX/GTX+, 9800 GT, 9600 GT, 9600 GSO, 9600 GS, 9500 GT, 9500 GS, 9400 GT, 9400, 9300 GS, 9300 GE, 9300, 9200, 9100

GeForce 8 series:
8800 Ultra, 8800 GTX, 8800 GTS 512, 8800 GTS, 8800 GT, 8800 GS, 8600 GTS, 8600 GT, 8600 GS, 8500 GT, 8400 SE, 8400 GS, 8400, 8300 GS, 8300, 8200 / nForce 730a, 8200, 8100 / nForce 720a

GeForce 7 series:
7950 GX2, 7950 GT, 7900 GTX, 7900 GT/GTO, 7900 GS, 7800 SLI, 7800 GTX, 7800 GT, 7800 GS, 7650 GS, 7600 LE, 7600 GT, 7600 GS, 7550 LE, 7500 LE, 7350 LE, 7300 SE / 7200 GS, 7300 LE, 7300 GT, 7300 GS, 7150 / NVIDIA nForce 630i, 7100 GS, 7100 / NVIDIA nForce 630i, 7100 / NVIDIA nForce 620i, 7050 PV / NVIDIA nForce 630a, 7050 / NVIDIA nForce 630i, 7050 / NVIDIA nForce 610i, 7025 / NVIDIA nForce 630a

GeForce 6 series:
6800 XT, 6800 XE, 6800 Ultra, 6800 Series GPU, 6800 LE, 6800 GT, 6800 GS/XT, 6800 GS, 6800, 6700 XL, 6610 XL, 6600 VE, 6600 LE, 6600 GT, 6600, 6500, 6250, 6200 TurboCache, 6200SE TurboCache, 6200 LE, 6200 A-LE, 6200, 6150SE nForce 430, 6150LE / Quadro NVS 210S, 6150 LE, 6150, 6100 nForce 420, 6100 nForce 405, 6100 nForce 400, 6100

ION series:
ION LE, ION