AmdMsrTweaker v1.1 (64-bit) is a legacy command-line utility designed for fine-tuning AMD P-States
As of 2026, AMD has been tightening security around MSR access with features like and MSR lockdown on certain workstation and server chips. However, on mainstream Ryzen desktop and laptop platforms, tools like AMDMSR Tweaker v11 continue to work. amdmsr tweaker v11 64 bit
for the 64-bit version) to gain low-level access to the CPU's registers. 64-bit Requirements AmdMsrTweaker v1