A:Answer 5.3 GHz is the maximum clock speed the CPU can temporarily reach, not a constant speed.
It activates automatically via Intel Turbo Boost
It applies to one or a few cores, not all cores
It is used for short bursts of work:
Opening apps,
Clicking in Excel,
Browser tab loads,
Compiling a small task,
Short AI or code execution spike.
Think of BOOST like a sports car overtake such as fast, brief, and intentional.