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All Intel chipsets from last three years support VT-X CPU feature, except chipsets suited for Intel Atom CPUs (which itself do not support VT-x). Stories you probably seen are (in context of Virtual Box remark) about more advanced tech called VD-d, feature allowing direct linking of PCI/PCIE devices to virtual machines. This is currently still considered by Intel as server-directed technology and support in desktop products is still hidden in the mist. Even top-rated Intel desktop CPU also not always support VT-d, chipset compatibility is a second stage of troubles.