According to Intel, the speed for the i3-10100 is "up to 4.3 GHz". The Processor's Base Frequency is 3.6 GHz.  4.3 GHz is the Max Turbo Frequency which "is the maximum single core frequency at which the processor is capable of operating using Intel Turbo Boost Technology and, if present, Intel Thermal Velocity Boost". So unless an app pushes the CPU hard enough to engage Turbo Boost fully, you may not get to the max speed, if ever. And even when Turbo engages, it may not stay engaged for very long.
Hello, Thank you for reading it. I purchased a DELL XPS 8940 with i3-10100 in this year. It runs on WIN10 PRO 64-bit. The problem is that i3-10100's maximum speed is 4.07 GHz, not 4.3 GHz. It only uses about 15% CPU for one single-thread program. I7-7700 can use about 20% CPU for the same single-thread program, and approach its maximum speed. Is there any settings to make i3-10100 to reach 4.3GHz? Thanks!
DELL XPS 8940 i3-10100's maximum speed is 4.07 GHz, not 4.3 GHz