What Is a Fan Curve?

Put simply, a fan curve is a graphic representation of how a computer fan operates.

The fan speed increases as the GPU gets hotter and vice versa.

ASUS Republic of Gamers NVIDIA GeForce RTX GPU inside a gaming PC.

Justin Duino / How-To Geek

Fans get progressively faster as the GPU gets hotter, so that they can keep it sufficiently cooled.

You probably won’t kill your GPU fan with a custom fan curve anyway.

Dust and debris that get stuck inside your fans will kill it sooner thanblasting the fans at maximum speed.

A GPU fan curve in MSI Afterburner.

After downloading and installing Afterburner, kick off the program and smack the gear icon to open configs.

Go to the “Fan” tab and select “Enable user defined software automatic fan control.”

The exact fan curve you use depends on your personal preference.

The default GPU fan curve in MSI Afterburner.

Your mileage may vary.

There’s no one-size-fits-all solution here, as GPUs can have vastly different temperature ranges and cooling solutions.

you might start with a fan curve similar to the default one in MSI Afterburner.

A GPU fan curve in MSI Afterburner with 0% fan speed at low temperatures and 100% fan speed at 85 degrees Celsius.

Different GPUs have different temperature thresholds, and future GPUs will also differ over time as technology advances.

A custom GPU fan curve in MSI Afterburner.