BIOS Settings & Overclocking

Here are the settings I used in my BIOS to overclock my i9 9900k to 5.1GHz. These work perfectly fine on macOS Mojave.

I set these after loading optimized defaults. I am currently using BIOS version F7.

M.I.T

Advanced Frequency Settings

CPU Clock Ratio: 51
Extreme Memory Profile (XMP): Profile1

Advanced CPU Core Settings

Uncore Ratio: 47
Package Power Limit1 - TDP (Watts): 4090
Package Power Limit2 (Watts): 4090
Platform Power Limit1 (Watts): 4090
Platform Power Limit2 (Watts): 4090
CPU Enhanced Halt (C1E): Disabled
C3 State Support: Disabled
C6/C7 State Support: Disabled
C8 State Support: Disabled
C10 State Support: Disabled

Advanced Memory Settings

Extreme Memory Profile (XMP): Profile1

Advanced Voltage Settings

Advanced Power Settings

CPU Internal AC/DC Load Line: Turbo
CPU Vcore Loadline Calibration: Turbo
VAXG Loadline Calibration: Turbo
CPU Vcore Current Protection: Turbo
VAXG Current Protection: Turbo

CPU Core Voltage Control

CPU Vcore: 1.370V

Peripherals

Super IO Configuration

Serial Port: Disabled

USB Configuration

XHCI Hand-off: Enabled

Chipset

Internal Graphics: Enabled

Power

AC BACK: Memory