The most mine can do is 5.1GHz at around 1.4V and 95°C at full load in Prime95. At 5.2GHz it just overheats in Prime95, despite Corsair H110i cooler running at 100% RPM.
The motherboard is Z390 Aorus Master with F10 BIOS.
The RAM is Trident Z RGB DDR4-4000MHz CL17-17-17-37 1.35V.
The settings are:
Turbo ratio 51.
AVX offset 0.
CPU Vcore switched from auto(OC) to normal(Intel).
Dynamic Vcore normal.
Vcore LLC low (higher values cause reboot in Prime95).
Multi core enhancement off.
Energy Efficient Turbo off.
Turbo Power Limits off.
CPU temperature protection 115°C.
Internal graphics off.