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CPU Configuration
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Hyper-Threading
The processor uses Hyper-Threadng technology to ncrease transacton
rates and reduces end-user response tmes. The technology treats the two
cores nsde the processor as two logcal processors that can execute nstruc-
tons smultaneously. In ths way, the system performance s hghly mproved.
If you dsable the functon, the processor wll use only one core to execute the
nstructons. Please dsable ths tem f your operatng system doesn't support
HT Functon, or unrelablty and nstablty may occur.
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Execute Disable Bit
Intel's Execute Dsable Bt functonalty can prevent certan classes of mal-
cous "buffer overflow" attacks when combned wth a supportng operatng
system. Ths functonalty allows the processor to classfy areas n memory by
where applcaton code can execute and where t cannot. When a malcous
worm attempts to nsert code n the buffer, the processor dsables code execu-
ton, preventng damage or worm propagaton.
▶
Limit CPUID Maximum
Ths feature allows you to crcumvent problems wth older operatng systems
that do not support the Intel Pentum 4 processor wth Hyper-Threadng Tech-
nology. When enabled, the processor wll lmt the maxmum CPUID nput
value to 03h when quered, even f the processor supports a hgher CPUID
nput value. When dsabled, the processor wll return the actual maxmum
CPUID nput value of the processor when quered.
MS-9896
MS-9896
3-7
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