GPU Undervolting & V-F Curve Efficiency Calculator
Fine-tune GPU core voltage vs boost clock curve. Discover exact power reductions, lower junction temperatures, fan RPM quietness, and annual energy cost savings without losing FPS.
GPU Specs & Voltage Target
Overclocking the lower voltage point maintains stock FPS.
V-F Curve Comparison (Stock vs Undervolt)
Live V-F SimulationA -100 mV drop with +75 MHz offset is typically 100% stable on TSMC 4N/5N silicon. Test with 3DMark Time Spy Extreme or Cyberpunk 2077 with Ray Tracing for 30 minutes.
How Voltage Scaling Reduces GPU Power Quadratically (\(P \propto V^2\))
Dynamic Power Formula
CMOS digital logic power follows \(P = C \cdot V^2 \cdot f\). Because power scales with the square of voltage, a 10% decrease in core voltage cuts power consumption by approximately 19% to 22% instantly.
Boost Clock Flattening
In MSI Afterburner, selecting your target voltage node (e.g. 925mV) and flattening the curve with Shift + L stops the GPU from over-volting into inefficient power states.
Zero FPS Loss Benefit
Because modern GPUs are thermally and power-limited, undervolting keeps the silicon below thermal throttle ceilings, often yielding sustained higher boost clocks than stock operation.