Themis RES - 32XR3, Installation Manual

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BIOS Setup Utility
Advanced Setup Configurations
3-11
Themis Computer
3.3.3.1 QPI & IMC Configuration
QuickPath Interconnect (QPI) is the connection between the CPU and the mother-
board's I/O hub. Use this feature to modify speed and power management settings.
3.3.3.2 QPI Links Speed
This feature selects QPI's data transfer speed. The options are Slow-mode, and Full
Speed (default).
3.3.3.3 QPI Frequency
This selects the desired QPI frequency. The options are Auto (default), 4.800 GT,
5.866GT, 6.400 GT.
3.3.3.4 QPI L0s and L1
QuickPath Interconnect (QPI) offers three power states called L0, L0s and L1:
• L0 is a normal operational state where data and control packets can be transmitted
and received. All power management states are entered from this state.
• L0s is intended as a power saving state. It allows a link to quickly enter and
recover from a power saving state without going through recovery.
• L1 is a power saving state that allows an additional power saving over L0s, but
with additional resume (wake-up) latency.
Select Enabled to activate QPI power saving (L0s and L1 are automatically selected
by the motherboard), select Disabled for normal operational state without any
power-saving function. The options are Disabled and
Enabled .
3.3.3.5 Memory Frequency
This feature forces the system memory to run at a different frequency than the
default frequency. The available options are
Auto (default), Force DDR-800, Force
DDR-1066, and Force DDR-1333.
3.3.3.6 Memory Mode
The options are Independent (default), Channel Mirror, Lockstep, and Sparing.
• Independent - All DIMMs are available to the operating system.
• Channel Mirror - The motherboard maintains two identical copies of all data
in memory for redundancy.