C’est annoncé ici : Announcing SharePoint Server 2010 Preliminary System Requirements _us avec tous les détails

    1. SharePoint Server 2010 will be 64-bit only.
    2. SharePoint Server 2010 will require 64-bit Windows Server 2008 or 64-bit Windows Server 2008 R2.
    3. SharePoint Server 2010 will require 64-bit SQL Server 2008 or 64-bit SQL Server 2005.

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