ASROCK 775XFIRE-VSTA - V1.2 User Manual page 41

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, you will find this item appear to allow you
changing the ratio value of this motherboard. If the CPU you adopt supports
EIST (Intel (R) SpeedStep(tm) tech.), and you plan to adjust the ratio value,
please disable the option " Intel (R) SpeedStep(tm) tech." in advance.
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
system that includes optimization for this technology, such as Microsoft
Windows XP. Set to [Enabled] if using Microsoft
®
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) Virtualization tech.
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 (R) Virtualization Technology.
Windows
®
4 1 4 1 4 1
4 1 4 1
®
®
XP, or Linux
®