The processor frequency (i5-1235U) is lower than stated

[basic021]

Diagnostic shows 12th Gen Intel(R) Core(TM) i5-1235U 1.30 GHz

But not 3.3 GHz  like describe on the off site 

Could you please tell me is it mistake or this is optionally? 

[Paul_Tikkanen · Accepted solution]

Hi:

There is nothing wrong with your PC.

The base frequency of the processor is 1.30 GHz (1,300 MHz).

This link will tell you all about how your processor works.

Intel Core i5-1235U Specs | TechPowerUp CPU Database

The other advertised frequencies are how fast the processor can run when a load is placed upon it.

Efficient-core Max Turbo Frequency  3.30 GHz

Maximum E-core turbo frequency derived from Intel® Turbo Boost Technology.

Performance-core Max Turbo Frequency  4.40 GHz

Maximum P-core turbo frequency derived from Intel® Turbo Boost Technology.

The Intel Turbo Boost Technology automatically adjusts the frequency/performance of the processor based on the demand placed on it.