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Simultaneous Multithreading
Hyper-threading technology allows a single physical processor core to
appear as several logical processors. With this technology the operating
system can better utilize the internal processor resources, which in turn
leads to increased performance. The advantages of this technology can
only be used by an operating system which supports ACPI. This setting
has no effect on operating systems which do not support ACPI.
Disabled
An ACPI operating system can only use the first logical processor
of the physical processor. This setting should only be used if
hyper-threading technology has not been correctly implemented
in the ACPI operating system.
Enabled
An ACPI operating system can use all logical processors within a
physical processor.
Virtualization Technology (VT-x)
Supports the virtualization of platform hardware and several software
environments, based on VMX (Virtual Machine Extensions) to support
the use of several software environments using virtual computers.
Virtualization technology extends the processor support for virtualization
purposes with the 16 Bit and 32 Bit protected modes and with the EM64T
®
(Intel
Extended Memory 64 Technology) mode.
Disabled
A VMM (Virtual Machine Monitor) cannot use the additional
hardware features.
Enabled
A VMM can use the additional hardware features.
Virtualization Technology (VT-d)
VT-d provides hardware support for sharing I/O devices between multiple
virtual machines. VMMs (Virtual Machine Monitors) can use VT-d for
managing multiple virtual machines accessing the same physical I/O
device.
Disabled
VT-d is disabled and not available for VMMs.
Enabled
VT-d is enabled.
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