MSI MS-98D6 Manual page 38

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BIOS Setup
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CPU Configuration
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Hyper-threading
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.
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Active Processor Cores
This setting specifies the number of active processor cores.
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Execute Disable Bit
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.
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Intel Virtualization Technology
Virtualization enhanced by Intel Virtualization Technology will allow
a platform to run multiple operating systems and applications in
independent partitions. With virtualization, one computer system can
function as multiple "Virtual" systems.
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