When running the RTM media it fails on the Site Recovery scenarios for restoring the site database.

The scenarios tested are:  Recover the site database using the backup set at the following location and Use a site database that has been manually recovered

The ConfigMgrPrereq/UI log says:
Dedicated SQL Server instance;    Error;    Configuration Manager requires a dedicated SQL Server instance to host its site database.  You selected a SQL Server instance that hosts the site database for another Configuration Manager site.  Select a different SQL Server instance for this new site to use, or resolve the conflict by uninstalling the other site or moving its database to a different SQL Server instance
Tests using SP1 Beta media successfully completes the database restore.