Windows XP 32-bit: http://www.nvidia.com/object/winxp_196.75_whql.html
Windows XP 64-bit: http://www.nvidia.com/object/winxp64_196.75_whql.html
Windows 7/Vista 32-bit: http://www.nvidia.com/object/win7_winvista_32bit_196.75_whql.htm
Windows 7/Vista 64-bit: http://www.nvidia.com/object/win7_winvista_64bit_196.75_whql.htm
Windows XP 64-bit: http://www.nvidia.com/object/winxp64_196.75_whql.html
Windows 7/Vista 32-bit: http://www.nvidia.com/object/win7_winvista_32bit_196.75_whql.htm
Windows 7/Vista 64-bit: http://www.nvidia.com/object/win7_winvista_64bit_196.75_whql.htm
New in Version 196.75
* Adds support for Next Generation ION.
* Adds support for GeForce GT 320, GeForce GT 330, and GeForce GT 340.
* Upgrades PhysX System Software to version 9.10.0129.
* Upgrades HD Audio driver to version 1.0.9.1 (for supported GPUs).
* Increases performance in several PC games from v196.21 WHQL. The following are examples of measured improvements. Results will vary depending on your GPU and system configuration:
*
o Up to 13% performance increase in Crysis: Warhead with a single GPU
o Up to 30% performance increase in Crysis: Warhead with SLI technology
o Up to 13% performance increase in H.A.W.X with single GPU
o Up to 15% performance increase in H.A.W.X with SLI technology
o Up to 30% performance increase in Left 4 Dead with single GPU
o Up to 28% performance increase in Left 4 Dead with SLI technology
* Adds SLI and multi-GPU support for top new gaming titles including Assassin Creed II, Battlefield: Bad Company 2, Command and Conquer 4: Tiberium Twilight, Grand Theft Auto IV: Episodes from Liberty City, Mass Effect 2, Napoleon: Total War, and Zombie Driver.
* Enhanced SLI support for World of Warcraft and Unigine.
* Adds Ambient Occlusion support for Call of Juarez: Bound in Blood, Need for Speed: Shift, Resident Evil 5, RUSE, and Street Fighter IV.
* Adds override anti-aliasing support for Mass Effect 2.
* Includes numerous bug fixes. Refer to the release notes on the documentation tab for information about the key bug fixes in this release.

crysis has the old AA bug again where trees are artifacting, heaven benchmark hangs on a blackscreen for a few seconds between scene changes, HL/source based games seem to have a memory leak or something and slowdown over time.
We all know ATI are ahead with hardware but without the decent drivers resource which Nvidia have its all pointless. Nvidia apparently have a team of 250 software engineers in their drivers team (which cost them in excess of $10M per year). They work with all the major developers to ensure that their cards run the latest PC games (sometimes with extra features!).