This spreadsheet lists the policy settings for computer and user configurations included in the administrative template files (admx/adml) delivered with Windows Vista (RTM build 6000). http://www.microsoft.com/downloads/details.aspx?FamilyID=41dc179b-3328-4350-ade1-c0d9289f09ef&DisplayLang=en
Tag: Active Directory
Active Directory Performance for 64-bit Versions of Windows Server 2003
If you are interested in AD performance on 64 bit you shoud read this great guide http://www.microsoft.com/downloads/details.aspx?FamilyID=52E7C3BD-570A-475C-96E0-316DC821E3E7&displaylang=en