MSI MS-9856 User Manual page 42

▍
BIOS SETUP
▶
Max CPUID Value Limit
The Max CPUID Value Limit BIOS feature allows you to circumvent prob-
lems 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 mali-
cious "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 mali-
cious 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 in-
structions 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 sys-
tem 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 dy-
namically adjust processor voltage and core frequency, which can result
in decreased average power consumption and decreased average heat
production.
3-8