Foxconn G45MG Series User Manual page 38

future virtualization solutions. This item will be displayed only when the CPU is supporting this
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. When disabled, it will disable one execution core of each CPU die. It is going to
provide backward compatibility, any way, keep it enabled.
► 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.
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