Intel GA-8I945P PRO - Manual (Page 35)

BIOS Setup - 35 -
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CPU Hyper-Threading
Enabled Enables CPU Hyper Threading Feature. Please note that this feature is only working
for operating system with multi processors mode supported. (Default value)
Disabled Disables CPU Hyper Threading.
Limit CPUID Max. to 3
Enabled Limit CPUID Maximum value to 3 when use older OS like NT4.
Disabled Disables CPUID Limit for windows XP. (Default value)
No-Execute Memory Protect (Note)
Enabled Enables No-Execute Memory Protect function. (Default value)
Disabled Disables No-Execute Memory Protect function.
CPU Enhanced Halt (C1E) (Note)
Enabled Enables CPU Enhanced Halt (C1E) function. (Default value)
Disabled Disables CPU Enhanced Halt (C1E) function.
CPU Thermal Monitor 2 (TM2) (Note)
Enabled Enable CPU Thermal Monitor 2 (TM2) function. (Default value)
Disabled Disable CPU Thermal Monitor 2 (TM2) function.
CPU EIST Function (Note)
Enabled Enable CPU EIST function. (Default value)
Disabled Disable EIST function.
(Note) This item will show up when you install a processor which supports this function.