RealTemp has not been updated in the last 10 years.
Recent Intel CPUs use Speed Shift Technology so there is no need to enable or disable the older EIST (SpeedStep). What are you trying to accomplish?
Try running ThrottleStop 9.6.
ThrottleStop is a small application designed to monitor for and correct the three main types of CPU throttling that are being used on many lapto
www.techpowerup.com
ThrottleStop supports newer Intel CPUs. It uses an updated driver so anti cheat programs should not complain about its use.
Create a new topic in the ThrottleStop forum and post some screenshots so I can see your CPU model and settings. Include screenshots of the FIVR and TPL windows.
Optimize and tweak your Intel processor
www.techpowerup.com
Programs need to use a signed driver when accessing registers within the CPU. You cannot access CPU registers with a CLI command.