Normally, in Intel processors, the maximum turbo boost is applied to a single core. If you do a mononúcleo benchmark, you will surely see it working at maximum turbo boost. In multinúcleo, the frequencies decrease because otherwise the TDP would skyrocket. It is also true that, since the 12th generation, they do not work as limited in frequencies but in temperature. Thermal throttling lowers temperatures. This can also be seen in the 7th generation of Ryzen...