ASRock P67 Extreme4 User Manual - Page 59

Enhance Halt State C1E - core c1e state

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Intel Hyper Threading Technology To enable this feature, it requires a computer system with an Intel processor that supports Hyper-Threading technology and an operating system that includes optimization for this technology, such as Microsoft® Windows® XP / VistaTM / 7. Set to [Enabled] if using Microsoft® Windows® XP, VistaTM, 7, or Linux kernel version 2.4.18 or higher. This option will be hidden if the installed CPU does not support Hyper-Threading technology. Active Processor Cores Use this item to select the number of cores to enable in each processor package. Con guration options: [All], [1] and [2]. The default value is [All]. Hardware Prefetcher Use this item to turn on/off the MLC streamer prefetcher. Adjacent Cache Line Prefetch Use this item to turn on/off prefetching of adjacent cache lines. Enhance Halt State (C1E) All processors support the Halt State (C1). The C1 state is supported through the native processor instructions HLT and MWAIT and requires no hardware support from the chipset. In the C1 power state, the processor maintains the context of the system caches. CPU C3 Report Use this to enable or disable CPU C3 (ACPI C2) report to OS. CPU C6 Report Use this to enable or disable CPU C6 (ACPI C3) report to OS. Package C State Limit Selected option will program into C State package limit register. The default value is [No Limit]. CPU Thermal Throttling You may select [Enabled] to enable CPU internal thermal control mechanism to keep the CPU from overheated. Intel Virtualization Technology When this option is set to [Enabled], a VMM (Virtual Machine Architecture) can utilize the additional hardware capabilities provided by Vanderpool Technology. This option will be hidden if the installed CPU does not support Intel Virtualization Technology. No-Excute Memory Protection No-Execution (NX) Memory Protection Technology is an enhancement to the IA-32 Intel Architecture. An IA-32 processor with "No Execute (NX) Memory Protection" can prevent data pages from being used by malicious software to execute code. This option will be hidden if the current CPU does not support No-Excute Memory Protection. 59

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59
Intel Hyper Threading Technology
To enable this feature, it requires a computer system with an Intel
processor that supports Hyper-Threading technology and an operating
system that includes optimization for this technology, such as Microsoft
®
Windows
®
XP / Vista
TM
/ 7. Set to [Enabled] if using Microsoft
®
Windows
®
XP, Vista
TM
, 7, or Linux kernel version 2.4.18 or higher. This option will be
hidden if the installed CPU does not support Hyper-Threading technology.
Active Processor Cores
Use this item to select the number of cores to enable in each processor
package. Con guration options: [All], [1] and [2]. The default value is [All].
Hardware Prefetcher
Use this item to turn on/off the MLC streamer prefetcher.
Adjacent Cache Line Prefetch
Use this item to turn on/off prefetching of adjacent cache lines.
Enhance Halt State (C1E)
All processors support the Halt State (C1). The C1 state is supported
through the native processor instructions HLT and MWAIT and requires no
hardware support from the chipset. In the C1 power state, the processor
maintains the context of the system caches.
CPU C3 Report
Use this to enable or disable CPU C3 (ACPI C2) report to OS.
CPU C6 Report
Use this to enable or disable CPU C6 (ACPI C3) report to OS.
Package C State Limit
Selected option will program into C State package limit register. The
default value is [No Limit].
CPU Thermal Throttling
You may select [Enabled] to enable CPU internal thermal control
mechanism to keep the CPU from overheated.
Intel Virtualization Technology
When this option is set to [Enabled], a VMM (Virtual Machine Architecture)
can utilize the additional hardware capabilities provided by Vanderpool
Technology. This option will be hidden if the installed CPU does not
support Intel Virtualization Technology.
No-Excute Memory Protection
No-Execution (NX) Memory Protection Technology is an enhancement
to the IA-32 Intel Architecture. An IA-32 processor with “No Execute (NX)
Memory Protection” can prevent data pages from being used by malicious
software to execute code. This option will be hidden if the current CPU
does not support No-Excute Memory Protection.