27
3
► C1E Function
C1E represents Enhanced HALT State. It is a feature which Intel CPU uses to reduce power
consumption when in halt state. C1E drops the CPU's multiplier and voltage to lower levels
when a HLT (halt) command is issued. This item is used to enable/disable the C1E support.
► 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.
► 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.
CA
UT
IO
N
!
