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» Max CPUID Value Limit
The Max CPUID Value Limit BIOS feature allows you to circumvent problems with older
operating systems that do not support the Intel Pentium 4 processor with Hyper-Threading
Technology. When enabled, the processor will limit the maximum CPUID input value to
03h when queried, even if the processor supports a higher CPUID input value. When
disabled, the processor will return the actual maximum CPUID input value of the proces-
sor when queried.
»
Execute Disable Bit Capability
Intel’s Execute Disable Bit functionality can prevent certain classes of malicious “buffer
over
À ow ´ attacks when combined with a supporting operating system. This functionality
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 or worm propagation.
» Hyper Threading Technology
The processor uses Hyper Threading technology to increase transaction rates and reduces
end-user response times. The technology treats the two cores inside the processor as two
logical processors that can execute instructions simultaneously. In this way, the system
performance is highly improved. If you disable the function, the processor will use only
one core to execute the instructions. Please disable this item if your operating system
doesn’t support HT Function, or unreliability and instability may occur.
» Intel(R) SpeedStep(tm) Tech
EIST (Enhanced Intel SpeedStep Technology) allows the system to dynamically adjust
processor voltage and core frequency, which can result in decreased average power
consumption and decreased average heat production..