The Speedstep Technology feature in the BIOS Setup Utility enables the system to dynamically adjust the CPU clock speed, which results in reduced power consumption and heat generation. This feature is only available on the X8450 Server Module. Upon powering on the server module, the BIOS will (1) detect the Intel processor installed, (2) validate the processor power states, and (3) relay the processor power states to the operating system. All power state change requests made by the processors are prioritized by the BIOS and operating system. The power state will automatically default to the processor requesting the highest power state.
The Intel Speedstep Technology feature is by default enabled on the X8450 Server Module. You can modify the Speedstep technology configuration option (Intel Speedstep Tech) in the BIOS Setup Utility through the Advanced Settings -> CPU Configuration menu.
For more information about Intel's Speedstep Technology, consult Intel's Enhanced Speedstep Technology for Intel Processors White Paper or other Intel documentation.