ASRock 775i915PL-SATA2 User Manual - Page 26

Max CPUID Value Limit

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Ratio Status This is a read-only item, which displays whether the ratio status of this motherboard is "Locked" or "Unlocked". If it shows "Unlocked", you will find an item Ratio CMOS Setting appears to allow you changing the ratio value of this motherboard. Ratio Actual Value This is a read-only item, which displays the ratio actual value of this motherboard. Ratio CMOS Setting If the ratio status is unlocked, will find this item appear to allow you changing the ratio value of this motherboard. CPU Thermal Throttling You may select [Enabled] to enable P4 CPU internal thermal control mechanism to keep the CPU from overheated. Hyper Threading Technology To enable this feature, it requires a computer system with an Intel Pentium®4 processor that supports Hyper-Threading technology and an operating system that includes optimization for this technology, such as Microsoft® Windows® XP. Set to [Enabled] if using Microsoft® Windows® XP, or Linux kernel version 2.4.18 or higher. This option will be hidden if the installed CPU does not support Hyper-Threading technology. Max CPUID Value Limit For Prescott CPU only, some OSes (ex. NT4.0) cannot handle the function with disable. This should be enabled in order to boot legacy OSes that cannot support CPUs with extended CPUID functions. 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. Enhance Halt State 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. Intel (R) SpeedStep(tm) tech. Intel (R) SpeedStep(tm) tech. is Intel's new power saving technology. Processor can switch between multiple frequency and voltage points to enable power savings. If you select [Auto], you need to set the "Power Schemes" as "Portable/Laptop" to enable this function. 26

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Ratio Status
This is a read-only item, which displays whether the ratio status of this
motherboard is “Locked” or “Unlocked”. If it shows “Unlocked”, you will find
an item
Ratio CMOS Setting
appears to allow you changing the ratio value
of this motherboard.
Ratio Actual Value
This is a read-only item, which displays the ratio actual value of this
motherboard.
Ratio CMOS Setting
If the ratio status is unlocked, will find this item appear to allow you chang-
ing the ratio value of this motherboard.
CPU Thermal Throttling
You may select [Enabled] to enable P4 CPU internal thermal control mecha-
nism to keep the CPU from overheated.
Hyper Threading Technology
To enable this feature, it requires a computer system with an Intel Pentium
®
4
processor that supports Hyper-Threading technology and an operating sys-
tem that includes optimization for this technology, such as Microsoft
®
Win-
dows
®
XP. Set to [Enabled] if using Microsoft
®
Windows
®
XP, or Linux kernel
version 2.4.18 or higher. This option will be hidden if the installed CPU does
not support Hyper-Threading technology.
Max CPUID Value Limit
For Prescott CPU only, some OSes (ex. NT4.0) cannot handle the function
with disable. This should be enabled in order to boot legacy OSes that
cannot support CPUs with extended CPUID functions.
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.
Enhance Halt State
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.
Intel (R) SpeedStep(tm) tech.
Intel (R) SpeedStep(tm) tech. is Intel’s new power saving technology. Proces-
sor can switch between multiple frequency and voltage points to enable
power savings. If you select [Auto], you need to set the “Power Schemes”
as “Portable/Laptop” to enable this function.