> Old quad core won't have all the virtualisation extensions. Intel's first quad core was Kentsfield in 2006. It supports VT-x. AMD's first quad core likewise

> Old quad core won't have all the virtualisation extensions. Intel's first quad core was Kentsfield in 2006. It supports VT-x. AMD's first quad core likewise supports AMD-V. The newer virtualization extensions mostly just improve performance a little or do things you probably won't use anyway like SR-IOV.