nVidia has released a new set of BETA display drivers on nZone, being 81.85. It is mostly just a maintenance driver to fix up a few issues with the previous release which improved performance quite a lot.
You'll find drivers versions for desktop and notebooks (Go 7800GTX only) at this page on nZone.
Compatibility fixes since 81.84 BETA driver. For a full list of fixed and known issues please view the Release Notes.
Mixed vendor support for NVIDIA SLI.
TV-Out/HD-out support for NVIDIA SLI.
Added support for VSync on Direct3D games when running NVIDIA SLI.
Performance enhancements for dual-core CPUs.
PureVideo high definition MPEG-2 de-interlacing support.
Usability enhancements when connecting to an HDTV.
Microsoft® DirectX® 9.0c and OpenGL® 2.0 support