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Chapter 3: BIOS Setup Utility
DRAM CAS# Latency
This item determines the operation of SDRAM memory CAS (column address
strobe). It is recommended that you leave this item at the default value. The 2T
setting requires faster memory that specifically supports this mode.
Performance Mode Select
You can enable this item to achieve a better performance; however, it is neces-
sary to use a better DDR SDRAM going with this function.
MA 1T/2T Select
This item adjusts timing 1T/2T latency. We recommend you to leave this item at
the default value.
Hyper Threading Function
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-
Magnetic Interference) generated by the system.
DRAM Voltage Control
Use this item to adjust the voltage of the DRAM memory.
CPU Vcore Voltage Adjustment
Use this item to adjust the Vcore voltage of the CPU.
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
It 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. Replacing older computers with Execute Disable Bit-enabled
systems can halt worm attacks, reducing the need for virus related repairs.
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.