"Atom is a low-power CPU from Intel with very low power dissipation (less than 3 W), targeted to laptops or handheld devices with internet access - dubbed MIDs, Mobile Internet Devices. In this tutorial we will explore the architecture used on this CPU."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips