Let’s take a hypothetical 16-core AMD CPU and pick out a few cores. Core 0 and Core 1 in the first CCX on the first die can boost to 2.2GHz and 2.15GHz, respectively, for 2.175GHz average frequency.
Core 13 and 15 in the second CCX on the other die can boost to 2.25GHz and 2.05GHz, respectively, for an average of 2.150GHz.
Core 0 and 1 would be the CPPC preferred cores for Windows, but Ryzen Master would assign the gold star to Core 13.
Core 13 might be the fastest core in the chip, but you can see it’s not the fastest overall selection for automated boosting.
Pairing Core 13 to Core 0, theoretically the highest average frequency, would potentially be offset by crossing CCX boundaries.