User Guide

4-30
Chapter 4: BIOS Setup
Hyper-threading [Enabled]
This item allows a hyper-threading processor to appear as two logical processors, allowing
the operating system to schedule two threads or processors simultaneously.
Congurationoptions:[Disabled][Enabled]
Active Processor Cores [All]
AllowsyoutoselectthenumberofCPUcorestoactivateineachprocessorpackage.
Congurationoptions:[All][1][2][3]
Intel Virtualization Technology [Enabled]
Whensetto[Enabled],aVMMcanutilizetheadditionalhardwarecapabilitiesprovidedby
Vanderpool Technology.
Congurationoptions:[Disabled][Enabled]
Hardware Prefetcher [Enabled]
Allows you to enable or disable the MLC streamer prefetcher.
Congurationoptions:[Disabled][Enabled]
Adjacent Cache Line Prefetch [Enabled]
This item allows you to enable or disable prefetching of adjacent cache lines.
Congurationoptions:[Disabled][Enabled]
CPU AES [Enabled]
Allows you to enable or disable the CPU Advance Encryption Standard instructions.
Congurationoptions:[Disabled][Enabled]
Boot performance mode [Max Non-Turbo Performance]
Allows you to select the CPU performance state during system boot before the operating
systemtakescontrol.TheCPUrunsataselectedperformanceratiobasedonCPU
conguration.
Congurationoptions:[MaxBattery][MaxNon-TurboPerformance][TurboPerformance]
Intel(R) Speed Shift Technology [Disabled]
Allows you to enable or disable Intel(R) Speed Shift Technology support. Enabling will
expose the CPPC v2 interface to allow for hardware controlled P-states.
Congurationoptions:[Disabled][Enabled]
Intel(R) SpeedStep(tm) [Enabled]
AllowsyoursystemtoadjusttheCPU’svoltageandcoresfrequency,resultingindecreased
power consumption and heat production.
[Disabled] TheCPUrunsatitsdefaultspeed.
[Enabled] ThesystemcontrolstheCPUspeed.
The following item appears only when you set Intel(R) SpeedStep(tm) to [Enabled].
Turbo Mode [Enabled]
This item allows you to automatically set the CPU cores to run faster than the base
operating frequency when it is below the operating power, current and temperature
specicationlimit.
Congurationoptions:[Disabled][Enabled]