Performance Tuning Guide

Intel DX58SO2/DX58OG Desktop Board Performance Tuning Guide
37
A Parameter Descriptions for
BIOS Performance Settings
Table A-1. BIOS Performance Settings
Setup Option Description
Host Clock
Frequency
Changing this setting overrides the host clock default frequency of 133.3 MHz. The
host clock frequency x processor ratio = processor speed. Changing the host clock
frequency also changes the memory and QPI speeds.
Processor
Voltage Override
Type
None: Allows the processor to manage it’s power usage
Static: Overrides the voltage requested by the processor and allows a user selected
Processor Static Voltage to be applied at all times. This option disables the dynamic
voltage control of the processor.
Dynamic: Defines an offset that will always be applied to the voltage requested by the
processor. The offset is the difference between the selected voltage and the voltage at
power on. For example, if the selected voltage is 1.3 V and the processor powers on at
1.1 V, an offset of 0.2 V will always be added to the voltage requested by the
processor.
Processor VR
Droop Control
This field is enabled when an override voltage is selected. CPU Voltage Droop occurs
when the processor is put under load. Selecting an option to decrease the voltage
droop will generally increase processor stability, but may consume more power and
generate heat.
Maximum Non-
Turbo Multiplier
Used to lower the maximum non-turbo processor speed. The maximum allowed value
is hard coded into your processor model. For overclocking, use the host clock or turbo
ratios (core ratios).
Processor Idle
State
When “Low Power” is selected, the BIOS will report a full range of available Enhanced
Intel SpeedStep Technology frequency steps to the operating system. When “High
Performance” is selected, the BIOS will report only the top frequency step. Note: C-
states may impact the ability of some frequency monitoring tools to accurately report
the full frequency.
Active Processor
Cores
This setting allows the user to change the number of cores enabled for the processor.
Intel
®
Hyper-
Threading
Technology
Allows Hyper-Threading Technology to be enabled or disabled. When Hyper-Threading
is disabled, only one thread per active processor core is available.
Intel
®
Turbo
Boost
Technology
Enabling Intel Turbo Boost Technology also enables Enhanced Intel SpeedStep
Technology and automatically allows processor cores to run faster than the base
operating frequency if the core(s) is operating below power, current, and temperature
specification limits.
TDC Current
Limit Override
(Amps)
Allows the user to set the upper current limit (in amps) that the processor can
consume. This parameter is designed to set the maximum current that your processor
voltage regulator can support. If this is exceeded, the maximum non-turbo ratio will
be used by the processor.