Realtek offers the HD audio drivers for Windows 7, Vista and XP as well as Linux in an updated version.
Realtek ALC 888: A eight channel sound chip common on many motherboards.
Quelle: PC Games Hardware
The current HD audio drivers for Realtek sound chips are available for download on the PC Games Hardware servers (for logged in users) or on the Realtek website (FTP often slow). The update is available for Windows 7, Vista and XP and the drivers include the files for the 32 and 64 bit versions of the operating systems. All HD audio chips from Realtek, which are used in many notebooks and on a lot of motherboards, are supported. Since version 2.25 the Realtek drivers are WHQL certified for Windows 7.
The sound specialist also offers a beta version of the 3D Sound Back Utility which reactivates or preserves 3D sound effects like Surround, Reverb and stereoscopic effects in older games running on Windows Vista. Due to the beta status of the software it is used at one's own risk! So you should make a backup of your important files in advance.
As usual the Changelog of the new Realtek HD audio driver does not give detailed information about the applied changes and lists undefined "Customizations” only. On the next page you can find the Changelog history of the Realtek HD audio drivers.