This is "ASUS Multicore Enhancement" mind you. I did the same thing with my i5-10400 with a z490 board and the same thing happens. Chip's power limits are ignored and it boosts higher under load for sustained periods and much higher than the all core turbo if the Intel defaults are enforced.. MultiCore Enhancement (MCE) allows the CPU to run at the maximum turbo frequency on all cores, regardless of how many cores are in use. Typically, the boost frequency varies based on how many cores are being used. Long Duration Package Power Limit (P1) defines the maximum wattage the CPU is allowed to run when under sustained loads. By default.
Except I accidentally left multicore enhancement on. It passes all tests in Intel Extreme Tuner with 5.3 all core, no AVX offset, at only 1.32v at LLC7. I was curious prior to reaching that if it was simply due to reduced temps, turning off multicore enhancement returns the immediate BSOD in any test at 5.3 Ghz all the way to 1.38v.. Turbo boost is handled by the motherboard not the CPU, Multicore enhancement runs the CPU at the top turbo boost setting regardless of load level so it is just OCing the CPU but without needing an unlocked CPU. Since it is OCing, make sure you aren't running too hot with the stock cooler before you enable it as it will make your CPU run hotter.