Advanced Processor Options - Supermicro X7DCU User Manual

Chapter 4: BIOS
Patrol Scrubbing
Scrubbing is a process that allows the North Bridge to correct correctable memory
errors detected on a memory module, and send the correction to the requestor (the
original source). When this item is set to Enabled, the North Bridge will read and
write back one cache line every 16K cycles, if there is no delay caused by internal
processing. By using this method, roughly 64 GB of memory behind the North Bridge
will be scrubbed every day. The options are Enabled and Disabled.
Enable Multi-Media Timer
Select Yes to activate a set of timers that are alternative to the traditional 8254
timers for the OS use. The options are Yes and No.
USB Host Controller
Select Enabled to activate the USB Host Controller. The settings are Enabled and
Disabled.
Legacy USB Support
This setting allows you to enable support for Legacy USB devices. The settings
are Enabled and Disabled.

Advanced Processor Options

Access the submenu to make changes to the following settings.
CPU Speed
This is a display that indicates the speed of the installed processor.
Frequency Ratio (Available if supported by the CPU.)
The feature allows the user to set the internal frequency multiplier for the CPU. The
default setting is Default.
Core-Multi-Processing (Available if supported by the CPU.)
Set to Enabled to use a processor's Second Core and beyond. (Please refer to
Intel's web site for more information.) The options are Disabled and Enabled.
Machine Checking (Available if supported by the CPU.)
Set to Enabled to activate the function of Machine Checking and allow the CPU to
detect and report hardware (machine) errors via a set of model-specifi c registers
(MSRs). The options are Disabled and Enabled.
Thermal Management 2 (Available if supported by the CPU.)
Set to Enabled to use Thermal Management 2 (TM2) which will lower CPU voltage
and frequency when the CPU temperature reaches a predefi ned overheat threshold.
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