MSI I3-945GSE - Manual (Page 42)

3-8
BIOS Setup
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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 processor when queried.
Execute Disable Bit Capability
Intel’s Execute Disable Bit functionality can prevent certain classes of
malicious “buffer overflow” 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 transac-
tion 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 perfor-
mance 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 aver-
age heat production.
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