System BIOS configuration 30
Table 20
Power Configuration submenu fields
Filed
Description
Options
ASPM Mode
This option would be chosen by the user if there were compatibility
issues with their PCIE option cards. This is the default setting.
Disabled
Allows the PCIE ports to enter L0s and/or L1 states.
Enabled
C1E Support
Enable or disable the “Enabled Halt State” disallowed. when power
efficiency mode is performance, value is disabled. This is the default
setting.
Disabled
This is enabled in order to enable or disabled the “Enabled Halt
State”. when power efficiency mode is efficiency, value is enabled.
Enabled
CC3/C6 State
Disabled Nehalem C state for CC3/C6. when power efficiency mode
is performance, value is disabled
Disabled
Nehalem C state for CC3/C6, the default value is Enabled. when
power efficiency mode is efficiency, value is enabled
Enabled
PCIe Gen 2
All PCI-E devices only run in Gen 1 mode.
Gen 1
Auto detects Gen 1/Gen 2 cards for best possible performance. PCIe
devices that support Gen 2 mode will be configured to run in Gen 2
mode. PCIe devices that only support Gen 1 mode will run in Gen 1
mode. It is the default setting.
Gen 2
QPI Power
Management
Disabled L0s and L1. when power efficiency mode is performance,
value is disabled
Disabled
Enable L0s and L1, when power efficiency mode is efficiency, value is
enabled, this is the default setting.
Enabled
Adjacent Cache
Line Prefetch
This option provides the best benchmark (performance/Watt)
numbers.
Disabled
For best performance, it is the default setting.
Enabled
Hardware
Prefetcher
This option provides the best benchmark (performance/Watt)
numbers.
Disabled
For best performance, it is the default setting.
Enabled
DCU Prefetcher
Predictable data pre-fetched into cache. Set according to observed
system performance results. Only for Intel® Xeon® 5600 Series –
processor. This is the default setting.
Enabled
Do not predictable data pre-fetched into cache.
Disabled
Patrol Scrubbing
Disable the ECC patrol scrub. It is the default value.
Disabled
Enable the ECC patrol scrub.
Enabled
Demand Scrubbing Disable the ECC demand scrub.
Disabled
Enable the ECC demand scrub, It is the default value.
Enabled
Enhanced
SpeedStep
Disable GV3.
Disabled
Enable GV3, It is the default value.
Enabled