Informational article about the OS showing the CPU frequency
The Operating System (OS) is not showing the Central Processing Unit (CPU) reaching the maximum Burst Frequency
Intel® Turbo Boost Technology, once enabled in BIOS, is automatically handled by the Operating System (OS); thus, if this does not report the speed of the CPU moving forward towards the Burst Frequency, this is because it does not find the need to.
For more information, refer to "Frequently Asked Questions for Intel® Turbo Boost Technology.
To ensure the Turbo Boost is enabled, run the Intel® Processor Identification Utility.
Boosting of the frequency is handled automatically by the OS.