MSI K9SD Master, User Manual

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3-10
MS-9185 Server Board
B
L2 ECC Scrub Control
The L2 ECC Scrub option controls the time allotted for the L2 memory cache
to be corrected when in an idle state.
Online Spare
Online Spare Memory mode provides a higher level of memory protection
than Standard Memory mode. It protects against single-bit errors and is
beneficial to businesses with sites that do not have sufficient IT staff avail-
able to service a failure, do not always have replacement memory on hand,
or where the server cannot be brought down before a scheduled shutdown.
USB BIOS Legacy Support
Set to [Enabled] if your need to use any USB 1.1/2.0 device in the operating
system that does not support or have any USB 1.1/2.0 driver installed, such as
DOS and SCO Unix.
ACPI P-State
ACPI P-state (Performance) control algorithm
’
s goal is to optimize the runtime
power consumption without significantly impacting performance. The algorithm
dynamically adjusts the processor frequency such that it is just high enough to
service the SW execution load. Operating point selection is done by the OS
power management algorithms (OSPM) based on the CPU load observed over
a window of time. Once the target point is set, the CPU is expected to modify its
operating voltage and frequency to match the OSPM's request.
ASPM Control
Active State Power Management (ASPM) allows individual serial Links in a PCI
Express fabric to have power incrementally reduced as a Link becomes less
active. Setting this function to [Enabled] will configure the PCI Express fabric to
enable the maximum power savings.