Although Windows 8 is supposed to be a OS that suits most Intel machines, this is not the case for the Atom based Netbooks or NetPcs. An dual core Atom 1.6GHz powered by Nvidia ION is able to run the developer preview happily. When it comes to the release preview, the installation couldn’t continue due to an underpowered system.
Looks like it still takes some fine tuning by Microsoft to allow low power systems to run this new OS happily.