Mnkai

TDP and Turbo Parameter Modification with MSR on Non-Overclockable CPUs

Disclaimer

• Modifying MSR may void your CPU's (or system board's) warranty. Proceed with caution. I am not responsible for any damage caused by this article.
• MSR addresses vary significantly between CPUs. Check your CPU's MSR address using Intel's documentation.
• This has only been tested on the Intel i7-8550U (Kaby Lake R).
• This article is a translation of this article. If you can read Korean, I recommend reading that article instead.

Introduction

al3xtjames

# Set Intel(R) Speed Shift Technology to Enabled
setup_var 0x4BC 0x1
# Set CFG Lock to Disabled
setup_var 0x4ED 0x0
# Set Above 4GB MMIO BIOS assignment to Enabled
# setup_var 0x79A 0x1

# Set EHCI Hand-off to Disabled
# setup_var 0x2 0x0
# Set XHCI Hand-off to Disabled