How to Undervolt an Intel CPU With ThrottleStop
Undervolting reduces requested voltage rather than directly reducing clock speed. A stable reduction may lower temperature and power use, but an excessive offset can cause application errors, freezes or blue screens.
Confirm Voltage Control Is Available
Open FIVR and check whether voltage controls are active. Many systems disable undervolting through BIOS or microcode security changes. Do not bypass a manufacturer lock with unknown firmware.
Start With a Baseline
Measure temperature, package power and performance before changing voltage. Save screenshots and note the workload. Without a baseline, a cooler result may simply reflect a different power plan or workload.
Adjust in Small Steps
Change a single voltage domain by a small amount, apply the setting and test. CPU Core and CPU Cache behavior depends on the platform; there is no universal offset that is safe for every processor.
Test More Than a Benchmark
A short stress test can expose an obvious failure, but light workloads, sleep and resume, battery operation and idle transitions may reveal instability later. Return toward zero offset after any error.
Frequently Asked Questions
Can undervolting damage a CPU?
Reducing voltage is different from adding voltage, but unstable settings can crash Windows and corrupt unsaved work.
Why is FIVR locked?
The BIOS, firmware or security mitigation may block voltage control. Availability is system-specific.
Related ThrottleStop Guides
How to use ThrottleStop · Undervolting guide · Safety · Troubleshooting · All guides
Independent resource: ThrottleStop was created by Kevin Glynn, also known as UncleWebb. ThrottleStopSoftware.com is not affiliated with or endorsed by the developer or TechPowerUp. Change hardware settings carefully and keep a recovery plan.