Are you aiming to for more power, or undervolt for lower temperatures? What motherboard model is this running on? Share public link
Laptop APUs are notorious for running hot. For example, on a Carrizo‑based notebook, users have successfully lowered the voltage of the P0 state from 1.1V (as reported by the tool) to around 1.0875V, which corresponded to a real‑world reduction from 1.325V to about 1.319V according to HWInfo. This small change can reduce temperatures by several degrees under load.
Since these changes reset on every reboot, most users create a simple amdmsr tweaker v11 64 bit
Standard Windows power profiles can sometimes be sluggish when switching between power states. By customizing the exact parameters of your CPU's idle states, you can drastically minimize power draw when the computer is performing basic tasks like media playback or word processing. How to Setup and Use AMDMSRTweaker v1.1
Note: Disabling C6 raises idle power consumption by 5-10W, so only use this when plugged in. Are you aiming to for more power, or
Name it "AMD MSR Tweaker" and set the Trigger to .
The is non-negotiable for modern systems. If you are running a 64-bit version of Windows 10 or 11 (which you almost certainly are on any AMD Ryzen system), the 64-bit build of AMDMSR Tweaker ensures full access to the CPU’s extended feature set and larger memory address space. Running a 32-bit version on a modern system would cripple performance and limit access to certain high-level MSRs. For example, on a Carrizo‑based notebook, users have
: Optimized binary performance engineered safely for modern 64-bit kernels without requiring legacy compatibility wrappers.
Modifying hardware values directly inside Model-Specific Registers carries clear operational risks. Passing an unstable voltage configuration or over-clocking a processor beyond its thermal boundary layer can lead to immediate visual artifacting, instant system lockups, or blue screen errors (BSOD).
If you plan to use this utility, let's make sure you have everything you need: What is the ?