ASROCK Intel W790 Series Software Setup Manual page 28

CPU BCLK Frequency
The CPU speed is determined by the CPU Ratio multiplied with the BCLK. Increasing the
BCLK will increase the internal CPU clock speed but also affect the clock speed of other
components.
BCLK Advanced Setting
Press [Enter] to configure BCLK Advanced Setting.
Intel Turbo Boost Technology
Intel Turbo Boost Technology enables the processor to run above its base operating
frequency when the operating system requests the highest performance state.
Configuration options: [Enabled] [Disabled]
Intel SpeedStep Technology
Intel SpeedStep technology allows processors to switch between multiple frequencies and
voltage points for better power saving and heat dissipation.
Intel Speed Shift Technology
Allows you to enable or disable the Intel Speed Shift Technology support. Enabling will
expose the CPPC v2 interface to allow for hardware controlled P-states. To get the best
support for Intel Turbo Boost Max Technology 3.0 (ITBMT 3.0), you have to enable Intel
Speed Shift Technology. If your CPU does not support ITMBT 3.0, option will still be
grayed out.
Configuration options: [Enabled] [Disabled]
Intel Turbo Boost Max Technology 3.0
Allows you to enable or disable the Intel Turbo Boost Max Technology 3.0 (ITBMT 3.0)
support. Disabling will report the maximum ratio of the slowest core in _CPC object.
Processors supporting the ITBMT 3.0 feature contain at least one processor core whose
maximum ratio is higher than the others.
Configuration options: [Enabled] [Disabled]
Boot Performance Mode
Default is Max Non-Turbo performance mode. It will keep cpu Flex-ratio till OS handoff.
Max Battery mode will set CPU ratio as x8 till OS handoff. This option is suggested for
BCLK overclocking.
Configuration options: [Max Battery] [Max Non-Turbo Performance] [Turbo Performance]
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