JBX THERMAL TUNING BLOG CPU & GPU Undervolting
Undervolt CPU GPU Guide
Thermal Tuning • 7 Min Read

How to Undervolt CPU & GPU for Lower Temperatures

By JBX Tech Experts • Published August 2026

Free Temperature Reduction Without Performance Loss

Manufacturers feed excess electrical voltage into CPUs and GPUs out of the factory to guarantee stability across silicon variance. Undervolting reduces excess voltage input while maintaining identical clock speeds.

1. Undervolting GPU with MSI Afterburner

Opening the Voltage-Frequency Curve Editor in MSI Afterburner allows capping max core voltage (e.g. 925mV at 1950MHz). Drops graphics card operating temperatures by 8°C to 12°C while reducing power draw by 40 Watts.

2. Undervolting CPU with ThrottleStop & Intel XTU

Applying a -50mV to -100mV core offset reduces CPU power consumption and fan noise during heavy multithreaded rendering.

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