Chapter 2
Installation and BIOS Setup
©
National Instruments
2-9
Power Configuration
Watchdog Function
If enabled, the watchdog timer allows the system to reboot when it is
inactive for more than 5 minutes. The options are
Enabled
and
Disabled
.
Power Button Function
If set to
Instant_Off
, the system powers off immediately as soon as you
press the power button. If set to
4_Second_Override
, the system powers
off when you press the power button for 4 seconds or longer. The options
are
Instant_Off
and
4_Second_Override
.
Restore on AC Power Loss
Use this feature to set the power state after a power outage. Select
Power-Off
for the system power to remain off after a power loss. Select
Power-On
for the system power to be turned on after a power loss. Select
Last State
to allow the system to resume its last state before a power loss.
The options are
Power-On
,
Power-Off
, and
Last State
.
Processor and Clock Options
Use this submenu to configure the processor and clock settings.
CPU Ratio
Select
Manual
to manually configure the ratio between the CPU core clock
and FSB frequency. Select
Auto
to allow the BIOS to configure the CPU
ratio automatically. The options are
Auto
and
Manual
.
Clock Spread Spectrum
Select
Enable
to enable Clock Spread Spectrum support, which allows the
BIOS to monitor and attempt to reduce, whenever needed, the level of
electromagnetic interference the components cause. The options are
Disabled
and
Enabled
.
Hardware Prefetcher
1
If set to
Enabled
, the hardware prefetcher prefetches streams of data and
instructions from the main memory to the L2 cache forward or backward to
improve CPU performance. The options are
Disabled
and
Enabled
.
1
Available when the CPU supports this option.
