Foxconn G45M-S English Manual. - Page 37

► Execute Disable Bit, ► Core Multi-Processing, ► PECI, ► EIST Function

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3 CAUTION feature and the setting is used to enable/disable it. ► Execute Disable Bit This item is used to enable/disable the Execute Disable Bit feature. Intel's Execute Disable Bit functionality can help prevent certain classes of malicious buffer overflow attacks when combined with a supporting operating system. Execute Disable Bit allows the processor to classify areas in memory by where application code can execute and where it cannot. When a malicious worm attempts to insert code in the buffer, the processor disables code execution, preventing damage and worm propagation. Replacing older computers with Execute Disable Bit-enabled systems can halt worm attacks, reducing the need for virus-related repairs. By combining Execute Disable Bit with anti-virus, firewall, spyware removal, e-mail filtering software, and other network security measures, IT managers can free IT resources for other initiatives. ► Core Multi-Processing It is used to enable or disable the feature and will be displayed only if your CPU is supporting this feature. ► PECI PECI stands for Platform Environment Control Interface. The PECI bus, allowing access to this data from chipset components, is a proprietary single-wire interface with a variable data transfer speed (from 2 kbit/s to 2 Mbit/s). From a control standpoint, the main difference between PECI and the previously used thermal monitoring methods is that PECI reports a negative value expressing the difference between the current temperature and the thermal throttle point (at which the CPU reduces speed or shuts down to prevent damage due to overheating) instead of the absolute temperature. For example, for a CPU with maximal temperature of 85 °C and a current temperature reading of 35 °C, the value reported by PECI would be -50 °C. ► EIST Function You can select the EIST (Processor Power Management, PPM) through this item. ! Enhanced Intel SpeedStep® technology (EIST) allows the system to dynamically adjust processor voltage and core frequency, which can result in decreased average power consumption and decreased average heat production. There are some system requirements must be met, including CPU, chipset, motherboard, BIOS and operation system. Please refer to Intel Website for more information. 30

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30
feature and the setting is used to enable/disable it.
► Execute Disable Bit
This item is used to enable/disable the Execute Disable Bit feature.
Intel's Execute Disable Bit functionality can help prevent certain classes of malicious buffer
overflow attacks when combined with a supporting operating system.
Execute Disable Bit allows the processor to classify areas in memory by where application
code can execute and where it cannot. When a malicious worm attempts to insert code in the
buffer, the processor disables code execution, preventing damage and worm propagation.
Replacing older computers with Execute Disable Bit-enabled systems can halt worm attacks,
reducing the need for virus-related repairs. By combining Execute Disable Bit with anti-virus,
firewall, spyware removal, e-mail filtering software, and other network security measures, IT
managers can free IT resources for other initiatives.
► Core Multi-Processing
It is used to enable or disable the feature and will be displayed only if your CPU is supporting
this feature.
► PECI
PECI stands for Platform Environment Control Interface. The PECI bus, allowing access to
this data from chipset components, is a proprietary single-wire interface with a variable data
transfer speed (from 2 kbit/s to 2 Mbit/s).
From a control standpoint, the main difference between PECI and the previously used thermal
monitoring methods is that PECI reports a negative value expressing the difference between
the current temperature and the thermal throttle point (at which the CPU reduces speed or
shuts down to prevent damage due to overheating) instead of the absolute temperature. For
example, for a CPU with maximal temperature of 85 °C and a current temperature reading of
35 °C, the value reported by PECI would be -50 °C.
► EIST Function
You can select the EIST (Processor Power Management, PPM) through this item.
Enhanced Intel SpeedStep
®
technology (EIST) allows the system to dynamically adjust
processor voltage and core frequency, which can result in decreased average power
consumption and decreased average heat production.
There are some system require-
ments must be met, including CPU, chipset, motherboard, BIOS and operation system.
Please refer to Intel Website for more information.
CAUTION
!