Nvidia released ver181.22 WHQL drivers for Windows XP and Vista. This driver version adds support for NVIDIA PhysX acceleration on all GeForce 8‐series, 9-series and 200-series GPUs with a minimum of 256MB dedicated graphics memory (this driver package installs NVIDIA PhysX System Software v9.09.0010).

Changes in Version 181.22

The following sections list the changes made and issues resolved since driver versions 181.20.

Fixed Issues-Windows XP 32-bit

Multi-GPU Resolved Issues and Changes
- [SLI], S.T.A.L.K.E.R.: Clear Sky Benchmark?added an SLI profile for the application.

Fixed Issues-Windows XP 64-bit

Multi-GPU Resolved Issues and Changes
- [SLI], S.T.A.L.K.E.R.: Clear Sky Benchmark?added an SLI profile for the application.

Complete changelog is available here

Downloads:

GeForce 181.22 WHQL Windows XP
GeForce 181.22 WHQL Windows XP x64
GeForce 181.22 WHQL Windows Vista x86
GeForce 181.22 WHQL Windows Vista x64