Screen Tearing Simulator

Watch how the ratio between your frame rate and your monitor's refresh rate decides whether the screen tears, where the tear sits, and how V-Sync, G-Sync and FreeSync (VRR) remove it. Drag the sliders to match your own setup.

Monitor refresh rate

Any Hz 240 Hz

Frame rate (FPS cap)

Any fps 165 fps

How to read it

The stripes are a moving image being drawn onto the panel one line at a time, top to bottom (the faint white line is the scanout). A tear is the red seam where the top of the screen is showing a newer frame than the bottom.

Frames divide evenly into Hz (e.g. 120 fps on 240 Hz): the tear freezes in one place and is easy to miss.
Mismatched (e.g. 165 fps on 240 Hz): the tear rolls up the screen — the obvious, distracting kind.
VRR on (G-Sync / FreeSync): the monitor refreshes exactly when a frame is ready, so there's no tear at all — as long as you stay inside the VRR range (cap a few fps below your refresh rate).