User`s guide

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Motherboard User’s Guide
Hyper Threading Technology
You can set “Disabled” or “Enabled” to control HT CPU support in O.S. Set
“Enabled” to test HT CPU function.
Auto detect DIMM/PCI Clock
When this item is enabled, BIOS will disable the clock signal of free DIMM/PCI
slots.
Spread Spectrum
If you enable spread spectrum, it can significantly reduce the EMI (Electro-Mag-
netic Interference) generated by the system.
Max CPUID Value Limit
When this item is enabled, you can use Prescott CPU and LGA-775 CPU and there
will be a normal NT4.0 installation; otherwise, the automatically restarting will
occur while installing.
Execute Disable Bit
This item is a security feature that helps you protect your CPU and operating
system against malicious software executing code. This item is available when CPU
supports the feature.
CPU TM Function
For some specific brands of CPU, you can use this item to control the CPU
frequency and voltage according to its temperature.
C1E Support
Use this item to decrease the bus ratio that reduces the consumption of CPU
electricity and power, which is only for the CPU supporting the C1E function.
Intel (R) Speedstep(tm) tech.
Use this item to enable or disable the Intel SpeedSetup Technology, which is only
for the Intel CPU supporting the SpeedSetup Technology function.